Aluminum

HCID 5359268CAS 7429-90-5

Basic information

Standard SMILES
[Al]
InChIKey
XAGFODPZIPBFFR-UHFFFAOYSA-N
Molecular formula
Al
Average molar mass
26.9815 g/mol
Monoisotopic mass
26.9815384

Names & identifiers

Preferred name
Aluminum
IUPAC
aluminum
English name
Aluminum
Molecular formula
Al
Molecular weight
26.98

Names & synonyms

ALUMINUMAluminium7429-90-5Aluminum metalAluminum powderMetallic aluminumAlAluminium metallicumAluminium 27Aluminium bronzeAluminum 27CHEBI:33629
Show more names
AEAluminium powderAluminum foilADOAluminium foilALUMINUM ALLOY
MetanaAluminium flakeAdomAlumina fibreNoral aluminumAluminum dehydratedAluminum A00Metana aluminum paste

Database identifiers

CAS
7429-90-5、91728-14-2
PubChem CID
5359268
DTXSID
DTXSID3040273
ChEBI
CHEBI:33629
UNII
CPD4NFA903
EC Number
231-072-3、618-785-9、640-421-2

Properties

Computed structural properties

Topological polar surface area
0 Ų
Hydrogen bond donors
0
Hydrogen bond acceptors
0
Rotatable bonds
0
Heavy atoms
1

Experimental & physicochemical properties

OdorOdorless
Density · 6 items

2.7 (NIOSH, 2024) - Denser than water; will sink

2.7 (NIOSH, 2024) - Denser than water; will sink

2.7 (NIOSH, 2024) - Denser than water; will sink

2.70

2.7 g/cm³

2.70

Color/Form · 4 items

Tin-white, malleable, ductile metal, with somewhat bluish tint

Silver white ductile metal, cubic

Crystalline solid

Silvery-white, malleable, ductile ... metal.

Solubility · 6 items

Insoluble (NIOSH, 2024)

Insoluble (NIOSH, 2024)

Insoluble (NIOSH, 2024)

Insoluble in water and in organic solvents. Soluble in dilute hydrochloric acid.

Soluble in HCl, H2SO4, hot water, and alkalies.

Insoluble in water.

Boiling Point · 6 items

4221 °F at 760 mmHg (NIOSH, 2024)

4221 °F at 760 mmHg (NIOSH, 2024)

4221 °F at 760 mmHg (NIOSH, 2024)

2327 °C

2327 °C

4221 °F

Melting Point · 6 items

1220 °F (NIOSH, 2024)

1220 °F (NIOSH, 2024)

1220 °F (NIOSH, 2024)

660

1220 ° F

660 °C

Physicochemical properties

Melting point
660.37 °C · 660.37 °C (lit.)
Boiling point
2460 °C · 2460 °C (lit.)
Density
2.7 g/mL · 2.7 g/mL at 25 °C (lit.)
bulk density
0.77 g/cm3 · 0.77g/cm3
vapor pressure
0.13 · 0.13-1300Pa at 974℃
Flash point
400 °C · 400°C

Safety & regulation

GHS classification

GHS Classification · 6 items

Danger

H250: Catches fire spontaneously if exposed to air [Danger Pyrophoric liquids];H261: In contact with water releases flammable gas [Danger Substances and mixtures which in contact with water, emit flammable gases]

P210, P222, P231, P231+P232, P233, P280, P302+P335+P334, P370+P378, P402+P404, and P501 (click each P-code to see the statement)

Danger

Hazard information

Regulatory Information · 6 items

Chemical: Aluminium

Hazard Traits - Hematotoxicity; Neurotoxicity;Authoritative List - ATSDR Neurotoxicants; CA MCLs; CWA 303(d);Report - if used as a fragrance or flavor ingredient

Aluminum is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Aluminum are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)

Status: Active Update: 07-05-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/15572;Status: Cease Manufacture Update: 07-06-2018 https://echa.europa.eu/registration-dossier/-/registered-dossier/23237

Aluminium, solid: Does not have an individual approval but may be used under an appropriate group standard

The New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.)

Other Safety InformationIMAP assessments - Aluminium: Human health tier I assessment;IMAP assessments - Aluminium: Environment tier I assessment
DOT Label · 4 items

Flammable Solid

Spontaneously Combustible

Dangerous When Wet

Class 9

Fire Hazards · 6 items

Excerpt from ERG Guide 170 [Metals (Powders, Dusts, Shavings, Borings, Turnings, or Cuttings, etc.)]:;May react violently or explosively on contact with water. Some are transported in flammable liquids. May be ignited by friction, heat, sparks or flames. Some of these materials will burn with intense heat. Dusts or fumes may form explosive mixtures in air. Containers may explode when heated. May re-ignite after fire is extinguished. (ERG, 2024)

Excerpt from ERG Guide 135 [Substances - Spontaneously Combustible]:;Flammable/combustible material. May ignite on contact with moist air or moisture. May burn rapidly with flare-burning effect. Some react vigorously or explosively on contact with water. Some may decompose explosively when heated or involved in a fire. May re-ignite after fire is extinguished. Runoff may create fire or explosion hazard. Containers may explode when heated. (ERG, 2024)

Excerpt from ERG Guide 138 [Substances - Water-Reactive (Emitting Flammable Gases)]:;Produce flammable gases on contact with water. May ignite on contact with water or moist air. Some react vigorously or explosively on contact with water. May be ignited by heat, sparks or flames. May re-ignite after fire is extinguished. Some are transported in highly flammable liquids. Runoff may create fire or explosion hazard. (ERG, 2024)

Excerpt from ERG Guide 169 [Aluminum (Molten)]:;Substance is transported in molten form at a temperature above 705 °C (1300 °F). Violent reaction with water; contact may cause an explosion or may produce a flammable gas. Will ignite combustible materials (wood, paper, oil, debris, etc.). Contact with nitrates or other oxidizers may cause an explosion. Contact with containers or other materials, including cold, wet or dirty tools, may cause an explosion. Contact with concrete will cause spalling and small pops. (ERG, 2024)

· May react violently or explosively on contact with water.;· Some are transported in flammable liquids.;· May be ignited by friction, heat, sparks or flames.;· Some of these materials will burn with intense heat.;· Dusts or fumes may form explosive mixtures in air.;· Containers may explode when heated.;· May re-ignite after fire is extinguished.

· Produce flammable gases on contact with water.;· May ignite on contact with water or moist air.;· Some react vigorously or explosively on contact with water.;· May be ignited by heat, sparks or flames.;· May re-ignite after fire is extinguished.;· Some are transported in highly flammable liquids.;· Runoff may create fire or explosion hazard.

Fire Potential · 4 items

...Finely divided aluminum dust is easily ignited... .

Certain polymerization catalysts, such as aluminum alkyls, react & burn violently on contact with water. /Aluminum alkyls/

Aluminum alkyls are organic aluminum compounds that are highly reactive and dangerous because of spontaneous burning in air. /Aluminum alkyls/

Prophoric material in flammable solvent. Vapors are heavier than air & may travel to a source of ignition & flash back. /Aluminum alkyls/

Health Hazards · 6 items

Excerpt from ERG Guide 170 [Metals (Powders, Dusts, Shavings, Borings, Turnings, or Cuttings, etc.)]:;Oxides from metallic fires are a severe health hazard. Inhalation or contact with substance or decomposition products may cause severe injury or death. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may cause environmental contamination. (ERG, 2024)

Excerpt from ERG Guide 135 [Substances - Spontaneously Combustible]:;Fire will produce irritating, corrosive and/or toxic gases. Inhalation of decomposition products may cause severe injury or death. Contact with substance may cause severe burns to skin and eyes. Runoff from fire control or dilution water may cause environmental contamination. CAUTION: Pentaborane (UN1380) is highly toxic and may be fatal if inhaled, ingested or absorbed through skin. (ERG, 2024)

Excerpt from ERG Guide 138 [Substances - Water-Reactive (Emitting Flammable Gases)]:;Inhalation or contact with vapors, substance or decomposition products may cause severe injury or death. May produce corrosive solutions on contact with water. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may cause environmental contamination. (ERG, 2024)

Excerpt from ERG Guide 169 [Aluminum (Molten)]:;Contact causes severe burns to skin and eyes. Fire may produce irritating and/or toxic gases. (ERG, 2024)

· Oxides from metallic fires are a severe health hazard.;· Inhalation or contact with substance or decomposition products may cause severe injury or death.;· Fire may produce irritating, corrosive and/or toxic gases.;· Runoff from fire control or dilution water may cause environmental contamination.

· Inhalation or contact with vapors, substance or decomposition products may cause severe injury or death.;· May produce corrosive solutions on contact with water.;· Fire will produce irritating, corrosive and/or toxic gases.;· Runoff from fire control or dilution water may cause environmental contamination.

Safety & protection

Fire Fighting · 5 items

Excerpt from ERG Guide 170 [Metals (Powders, Dusts, Shavings, Borings, Turnings, or Cuttings, etc.)]:;DO NOT USE WATER, FOAM OR CO2. Dousing metallic fires with water will generate hydrogen gas, an extremely dangerous explosion hazard, particularly if fire is in a confined environment (i.e., building, cargo hold, etc.). Use DRY sand, graphite powder, dry sodium chloride-based extinguishers, or class D extinguishers. Confining and smothering metal fires is preferable rather than applying water. If it can be done safely, move undamaged containers away from the area around the fire.;FIRE INVOLVING TANKS, RAIL TANK CARS OR HIGHWAY TANKS: If impossible to extinguish, protect surroundings and allow fire to burn itself out. (ERG, 2024)

Excerpt from ERG Guide 135 [Substances - Spontaneously Combustible]:;DO NOT USE WATER, CO2 OR FOAM ON MATERIAL ITSELF. Some of these materials may react violently with water. CAUTION: For Xanthates, UN3342 and for Dithionite (Hydrosulfite/Hydrosulphite) UN1384, UN1923 and UN1929, USE FLOODING AMOUNTS OF WATER for SMALL AND LARGE fires to stop the reaction. Smothering will not work for these materials, they do not need air to burn.;SMALL FIRE: Dry chemical, soda ash, lime or DRY sand, EXCEPT for UN1384, UN1923, UN1929 and UN3342.;LARGE FIRE: DRY sand, dry chemical, soda ash or lime EXCEPT for UN1384, UN1923, UN1929 and UN3342, or withdraw from area and let fire burn. CAUTION: UN3342 when flooded with water will continue to evolve flammable Carbon disulfide/Carbon disulphide vapors. If it can be done safely, move undamaged containers away from the area around the fire.;FIRE INVOLVING TANKS, RAIL TANK CARS OR HIGHWAY TANKS: Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. Do not get water inside containers or in contact with substance. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks in direct contact with flames. (ERG, 2024)

Excerpt from ERG Guide 138 [Substances - Water-Reactive (Emitting Flammable Gases)]:;DO NOT USE WATER OR FOAM.;SMALL FIRE: Dry chemical, soda ash, lime or sand.;LARGE FIRE: DRY sand, dry chemical, soda ash or lime or withdraw from area and let fire burn. If it can be done safely, move undamaged containers away from the area around the fire.;FIRE INVOLVING METALS OR POWDERS (ALUMINUM, LITHIUM, MAGNESIUM, ETC.): Use dry chemical, DRY sand, sodium chloride powder, graphite powder or class D extinguishers; in addition, for Lithium you may use Lith-X® powder or copper powder. Also, see ERG Guide 170.;FIRE INVOLVING TANKS, RAIL TANK CARS OR HIGHWAY TANKS: Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. Do not get water inside containers. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks in direct contact with flames. (ERG, 2024)

Excerpt from ERG Guide 169 [Aluminum (Molten)]:;Do not use water, except in life-threatening situations and then only in a fine spray. Do not use halogenated extinguishing agents or foam. Move combustibles out of path of advancing pool if you can do so without risk. Extinguish fires started by molten material by using appropriate method for the burning material; keep water, halogenated extinguishing agents and foam away from the molten material. (ERG, 2024)

Use dry sand, special powder. NO water. NO carbon dioxide, foam.

First Aid Measures · 4 items

Fresh air, rest.

Rinse skin with plenty of water or shower.

First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.

Rinse mouth.

Accidental Release Measures · 4 items

· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.;· Stay upwind, uphill and/or upstream.;· Keep unauthorized personnel away.

· ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.;· Do not touch or walk through spilled material.;· Stop leak if you can do it without risk.;· Prevent entry into waterways, sewers, basements or confined areas.

· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.;· Keep unauthorized personnel away.;· Stay upwind, uphill and/or upstream.;· Ventilate closed spaces before entering, but only if properly trained and equipped.

· ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.;· Do not touch or walk through spilled material.;· Stop leak if you can do it without risk.;· Use water spray to reduce vapors or divert vapor cloud drift. Avoid allowing water runoff to contact spilled material.;· DO NOT GET WATER on spilled substance or inside containers.;Small Spill;· Cover with DRY earth, DRY sand or other non-combustible material followed with plastic sheet to minimize spreading or contact with rain.;· Dike for later disposal; do not apply water unless directed to do so.;Powder Spill;· Cover powder spill with plastic sheet or tarp to minimize spreading and keep powder dry.;· DO NOT CLEAN-UP OR DISPOSE OF, EXCEPT UNDER SUPERVISION OF A SPECIALIST.

First Aid · 6 items

Excerpt from NIOSH Pocket Guide for Aluminum:;Eye: IRRIGATE IMMEDIATELY - If this chemical contacts the eyes, immediately wash (irrigate) the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately.;Breathing: FRESH AIR - If a person breathes large amounts of this chemical, move the exposed person to fresh air at once. Other measures are usually unnecessary. (NIOSH, 2024)

Excerpt from ERG Guide 135 [Substances - Spontaneously Combustible]:;Refer to the "General First Aid" section. (ERG, 2024)

Excerpt from NIOSH Pocket Guide for Aluminum:;Eye: IRRIGATE IMMEDIATELY - If this chemical contacts the eyes, immediately wash (irrigate) the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately.;Breathing: FRESH AIR - If a person breathes large amounts of this chemical, move the exposed person to fresh air at once. Other measures are usually unnecessary. (NIOSH, 2024)

Excerpt from NIOSH Pocket Guide for Aluminum:;Eye: IRRIGATE IMMEDIATELY - If this chemical contacts the eyes, immediately wash (irrigate) the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately.;Breathing: FRESH AIR - If a person breathes large amounts of this chemical, move the exposed person to fresh air at once. Other measures are usually unnecessary. (NIOSH, 2024)

General First Aid:;· Call 911 or emergency medical service.;· Ensure that medical personnel are aware of the material(s) involved, take precautions to protect themselves and avoid contamination.;· Move victim to fresh air if it can be done safely.;· Administer oxygen if breathing is difficult.;· If victim is not breathing:;-- DO NOT perform mouth-to-mouth resuscitation; the victim may have ingested or inhaled the substance.;-- If equipped and pulse detected, wash face and mouth, then give artificial respiration using a proper respiratory medical device (bag-valve mask, pocket mask equipped with a one-way valve or other device).;-- If no pulse detected or no respiratory medical device available, provide continuous compressions. Conduct a pulse check every two minutes or monitor for any signs of spontaneous respirations.;· Remove and isolate contaminated clothing and shoes.;· For minor skin contact, avoid spreading material on unaffected skin.;· In case of contact with substance, remove immediately by flushing skin or eyes with running water for at least 20 minutes.;· For severe burns, immediate medical attention is required.;· Effects of exposure (inhalation, ingestion, or skin contact) to substance may be delayed.;· Keep victim calm and warm.;· Keep victim under observation.;· For further assistance, contact your local Poison Control Center.;· Note: Basic Life Support (BLS) and Advanced Life Support (ALS) should be done by trained professionals.;In Canada, an Emergency Response Assistance Plan (ERAP) may be required for this product. Please consult the shipping paper and/or the "ERAP" section.

General First Aid:;· Call 911 or emergency medical service.;· Ensure that medical personnel are aware of the material(s) involved, take precautions to protect themselves and avoid contamination.;· Move victim to fresh air if it can be done safely.;· Administer oxygen if breathing is difficult.;· If victim is not breathing:;-- DO NOT perform mouth-to-mouth resuscitation; the victim may have ingested or inhaled the substance.;-- If equipped and pulse detected, wash face and mouth, then give artificial respiration using a proper respiratory medical device (bag-valve mask, pocket mask equipped with a one-way valve or other device).;-- If no pulse detected or no respiratory medical device available, provide continuous compressions. Conduct a pulse check every two minutes or monitor for any signs of spontaneous respirations.;· Remove and isolate contaminated clothing and shoes.;· For minor skin contact, avoid spreading material on unaffected skin.;· In case of contact with substance, remove immediately by flushing skin or eyes with running water for at least 20 minutes.;· For severe burns, immediate medical attention is required.;· Effects of exposure (inhalation, ingestion, or skin contact) to substance may be delayed.;· Keep victim calm and warm.;· Keep victim under observation.;· For further assistance, contact your local Poison Control Center.;· Note: Basic Life Support (BLS) and Advanced Life Support (ALS) should be done by trained professionals.;Specific First Aid:;· In case of contact with substance, wipe from skin immediately; flush skin or eyes with running water for at least 20 minutes.

Safe StorageSeparated from strong oxidants, strong bases, strong acids, water and halogens. See Chemical Dangers. Dry. Well closed.
Firefighting HazardsDO NOT use carbon dioxide or halogenated extinguishing agents. DO NOT use water.

Toxicology

Toxicological InformationCDC-ATSDR Toxicological Profile
Interactions · 5 items

Groups of 120 Atlantic salmon fry (Salmo salar, 1 g mass) were kept in through-flow tanks of water (pH 5) containing various concn of aluminum and silicic acid. The aluminum concn in all but the control tank (0.85 umol aluminum/l) were 6-7 umol/l, at acutely toxic levels. Silicon levels were 0.66 umol/l (control), 93.06, 24.89, 5.46, and 0.60 umol/l, corresponding to silicon:aluminum ratios of 13.0, 3.7, 0.9, and 0.1. Exchangeable aluminum, ie, aluminum retained on Amberlite, was 6.00, 5.00, 4.11, and 1.52 umol/l in test tanks, respectively. Fish were exposed for 96 hr, and the proportion of dead fish was recorded at 12-hr intervals. The whole experiment was run three times; data are from all runs combined. At a silicon:aluminum ratio of 13, acute toxicity of aluminum was eliminated and gill structures of the fish were normal. Percent survival versus time was higher for the higher silicon:aluminum ratio groups. Accumulation of aluminum by fish fell sharply as the exchangeable aluminum increased. Aluminum and silicon levels in fish were 0.44 and 0.01 (control), 0.40 and 0.54 (silicon:aluminum ratio of 13), 2.04 and 0.35 (silicon:aluminum ratio of 3.7), 2.49 and 0.33 (silicon :aluminum ratio of 0.9), 2.38 and 0.08 (silicon:aluminum ratio of 0.1) umol per g dry mass, respectively.

To elucidate the interaction between aluminum and certain essential trace metals, an experiment was performed on rats fed diets with suboptimal or optimal levels of zinc or copper. Half of each group of animals were fed the same diet but with 1000 ppm aluminum added. Changes were noted after 120 days. Severe testicular damage was seen in rats fed either the low zinc or the low copper diet. The lesions included a wide range of spermatogenic cell degeneration and tubular atropy. When aluminum was added to the diet, the testicular destruction of zinc deficient rats was significantly reduced. This indicated that the presence of aluminum in the diet protected the testis against the damage caused by zinc deficiency. Pituitary glands were examined. Hypertrophy of basophils was more pronounced in rats fed the suboptimal zinc or copper diet. When aluminum was added to their diet, the changes were reversed. The mechanisms by which aluminum protects male gonadal functions against zinc deficiency are discussed. This study is the first to demonstrate the preventive effect of aluminum against testicular damage caused by zinc deficiency.

Adult, male New Zealand rabbits (three per group) were administered drinking water containing aluminum chloride (0, 100, or 500 mg aluminum/liter) together with citrate (0.11 M) ascorbate (0.11 M), or no added ligand and libitum for 12 weeks. They were fed ad libitum regular rabbit chow analyzed to contain 297 mg aluminum/kg. Treatment had no effect upon food and water intake or weight gain during the experimental period. No effect of aluminum was observed on tissue levels of the essential metals zinc, copper, and iron, or on hemoglobin and hematocrit values. Aluminum levels were fund to increase in a dose-dependent manner in stomach and intestinal mucosa, kidney, bone, urine, and fece. There was only a slight accumulation in liver, and no accumulation in brain (cerebral cortex or hippocampus). Although plasma aluminum was directly related to aluminum intake, whole blood aluminum bore no relation to aluminum dose. Citrate had no efefct on aluminum accumulation in the stomach or intestine, but significantly enhanced plasma and bone aluminum levels. Ascorbate did not enhance aluminum accumulation in any tissue studied and even prevented accumulation in bone. Both citrate and ascorbate enhanced excretion of aluminum. Ascorbate therapy may be of potential clinical use to enhance aluminum excretion.

Examined 25 dialysis patients that experienced accidental exposure to aluminum and parathyroid hormone (PTH). At the same time as parathyroid hormone decreased, serum calcium increased. Based on this observation it has been suggested that aluminum is incorporated, instead of calcium, into the bone and that this leads to the osteomalacia characteristic of aluminum-induced bone disease. Instead of being incorporated into osteoid bone tissue, calcium returns to the circulation which in turn inhibits the parathyroid hormone release from the parathyroid. In support of this hypothesis, ... found a strong correlation between bone aluminum content and the amount of bone occupied by unmineralized osteoid in humans. Experimental support for the hypothesis of calcium-aluminum interactions has also been provided in studies on chicks. /Aluminum/

For more Interactions (Complete) data for ALUMINUM, ELEMENTAL (6 total), please visit the HSDB record page.

Target Organs · 2 items

Neurological (Nervous System), Respiratory (From the Nose to the Lungs)

Eyes, skin, respiratory system

Health Effects · 1 item

Aluminum targets the nervous system and causes decreased nervous system performance and is associated with altered function of the blood-brain barrier. The accumulation of aluminum in the body may cause bone or brain diseases. High levels of aluminum have been linked to Alzheimer’s disease. A small percentage of people are allergic to aluminium and experience contact dermatitis, digestive disorders, vomiting or other symptoms upon contact or ingestion of products containing aluminium. (L739, L740)

Ecotoxicity Values · 5 items

LC50 Pisidium casertanum >1.0 mg/L/96 hr; static, 20-25 °C, pH 3.5

LC50 Pisidium casertanum >0.4 mg/L/96 hr; static, 20-25 °C, pH 4.5

LC50 Pisidium compressum >0.4 mg/L/96 hr; static, 20-25 °C, pH 4.5

LC50 Pisidium compressum >1.0 mg/L/96 hr; static, 20-25 °C, pH 3.5

For more Ecotoxicity Values (Complete) data for ALUMINUM, ELEMENTAL (20 total), please visit the HSDB record page.

Adverse Effects · 1 item

Neurotoxin - Other CNS neurotoxin;Asthma - Reversible bronchoconstriction (narrowing of bronchioles) initiated by the inhalation of irritating or allergenic agents.;Fibrogenic - Inducing tissue injury and fibrosis (scarring).;ACGIH Carcinogen - Not Classifiable.

Regulatory information

Regulatory Information · 6 items

Chemical: Aluminium

Hazard Traits - Hematotoxicity; Neurotoxicity;Authoritative List - ATSDR Neurotoxicants; CA MCLs; CWA 303(d);Report - if used as a fragrance or flavor ingredient

Aluminum is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Aluminum are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)

Status: Active Update: 07-05-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/15572;Status: Cease Manufacture Update: 07-06-2018 https://echa.europa.eu/registration-dossier/-/registered-dossier/23237

Aluminium, solid: Does not have an individual approval but may be used under an appropriate group standard

The New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.)

FDA Requirements · 3 items

Aluminum is an indirect food additive for use only as a component of adhesives.

Certification of this color additive when used in externally applied drugs, including those intended for use in the area of the eye, in amounts consistent with good manufacturing practice is not necessary for the protection of the public health, and therefore batches thereof are exempt from the certification pursuant to section 721(c) of the act. /Aluminum powder/

Certification of this color additive when used in coloring externally applied cosmetics, including cosmetics intended for use in the area of the eye, in amounts consistent with good manufacturing practice is not necessary for the protection of the public health, and therefore batches thereof are exempt from the certification pursuant to section 721(c) of the act. /Aluminum powder/

FIFRA Requirements · 1 item

As the federal pesticide law FIFRA directs, EPA is conducting a comprehensive review of older pesticides to consider their health and environmental effects and make decisions about their future use. Under this pesticide reregistration program, EPA examines health and safety data for pesticide active ingredients initially registered before November 1, 1984, and determines whether they are eligible for reregistration. In addition, all pesticides must meet the new safety standard of the Food Quality Protection Act of 1996. Pesticides for which EPA had not issued Registration Standards prior to the effective date of FIFRA '88 were divided into three lists based upon their potential for human exposure and other factors, with List B containing pesticides of greater concern and List D pesticides of less concern. Aluminum powder is found on List D. Case No: 4007; Pesticide type: herbicide, antimicrobial; Case Status: No products containing the pesticide are actively registered. Therefore ... "cancelled." Under FIFRA, pesticide producers may voluntarily cancel their registered products. EPA also may cancel pesticide registrations if registrants fail to pay required fees or make/meet certain reregistration commitments, or if EPA reaches findings of unreasonable adverse effects.; Active ingredient (AI): aluminum powder; AI Status: The active ingredient is no longer contained in any registered products ... "cancelled."

State Drinking Water Standards(CA) CALIFORNIA 1000 ug/L
DHS Chemicals of Interest (COI) · 4 items

Aluminum (powder)

A Commercial Grade

100

Explosive/Improvised Explosive Device Precursor material that, if stolen or diverted, can be converted into weapons using simple chemistry, equipment, or techniques.

State Drinking Water Guidelines · 3 items

(AZ) ARIZONA 73 ug/L

(CA) CALIFORNIA 200 ug/L

(ME) MAINE 1430 ug/L

Safety data

OEB
B
OEL
TWA: 10 mg/m3 (total)
wgk
3
tsca
TSCA listed
rtecs
BD0330000
ridadr
UN 1396 4.3/PG II/III (ALUMINIUM POWDER, UNCOATED)

Chemistry & industry

Pharmacology

Mechanism of Action · 6 items

Aluminum Acetate is an astringent. An astrignent is a chemical that tends to shrink or constrict body tissues, usually locally after topical medicinal application. The shrinkage or constriction is through osmotic flow of water (or other fluids) away from the area where the astringent was applied. Astringent medicines cause shrinkage of mucous membranes or exposed tissues and are often used internally to check discharge of blood serum or mucous secretions. This can happen with a sore throat, hemorrhages, diarrhea, or with peptic ulcers. Externally applied astringents, which cause mild coagulation of skin proteins, dry, harden, and protect the skin. Acne sufferers are often advised to use astringents if they have oily skin. Astringents also help heal stretch marks and other scars. Mild astringent solutions are used in the relief of such minor skin irritations as those resulting from superficial cuts, allergies, insect bites, or fungal infections such as athlete's foot.

Excessive dietary aluminum has been proposed to be a factor contributing to several neurological disorders in humans. Six 8-week-old female Swiss Webster mice were fed for 10 wk purified diets containing 100 (control), 500 or 1000 ug aluminum/g diet. Brain and liver lipid peroxidation was determined by evaluating the production of 2-thiobarbituric acid reactive substances in brain and liver homogenates in the presence or absence of 50 uM ferrous iron. 2-Thiobarbituric acid reactive substances production in the absence of iron in brain homogenates from mice fed the 1000 ug/g diet was higher (30%) than that in the 100 ug/g control group (3.1 vs 2.4 nmol 2-thiobarbituric acid reactive substances/mg protein). The addition of ferrous iron increased 2-thiobarbituric acid reactive substances production in brain homogenates from all 3 dietary groups. The iron induced 2-thiobarbituric acid reactive substances production was 26% higher in the 1000 ug/g brain homogenates than in the 100 ug/g group (4.9 vs 3.9 nmol 2-thiobarbituric acid reactive substances/mg protein). Brain 2-thiobarbituric acid reactive substances production in the presence and absence of iron was similar between the 100 and 500 ug/g aluminum groups. 2-Thiobarbituric acid reactive substances production in liver homogenates measured either with or without iron was similar for the 3 groups. These results show that, in mice, dietary aluminum intoxication leads to increased brain 2-thiobarbituric acid reactive substance production, suggesting that enhanced lipid peroxidation may be one possible mechanism underlying the neurological damage associated with increased tissue aluminum.

Evidence is presented indicating that dementias are associated with a relative insufficiency of magnesium in the brain. Such insufficiency may be attributable to low intake or retention of magnesium; high intake of a neurotoxic metal, such as aluminum, which inhibits activity of magnesium requiring enzymes; or impaired transport of magnesium and/or enhanced transport of the neurotoxic metal into brain tissue. It is proposed that Alzheimer's disease involves a defective transport process, characterized by both an abnormally high incorporation of aluminum and an abnormally low incorporation that an altered serum protein contributes to the progression of Alzheimer's disease by having a greater affinity for aluminum than for magnesium, in contrast to the normal protein, which binds magnesium better than aluminum. The altered protein crosses the blood-brain barrier more efficiently than the normal protein and competes with the normal protein in binding to brain neurons. Binding of the altered protein to the target neurons would both facilitate aluminum uptake and impede magnesium uptake. Evidence suggests that albumin is the serum protein that is altered.

Aluminum is established as a neurotoxin, although the basis for its toxicity is unknown. It recently has been shown to alter the function of the blood-brain barrier, which regulates exchanges between the central nervous system and peripheral circulation. The blood-brain barrier owes its unique properties to the integrity of cell membranes that comprise it. Aluminum affects some of the membrane-like functions of the blood-brain barrier. It increases the rate of transmembrane diffusion and selectively changes saturable transport systems without disrupting the integrity of the membranes or altering CNS hemodynamics. Such alterations in the access to the brain of nutrients, hormones, toxins, and drugs could be the basis of CNS dysfunction. Aluminum is capable of altering membrane function at the blood-brain barrier; many of its effects on the CNS a well a peripheral tissues can be explained by its actions as a membrane toxin.

The endocrine response of porcine parathyroid gland tissue slices in vitro to aluminum was studied by electron microscopy and radioimmunoassay of parathyroid hormone. Medium aluminum concentrations were 20 to 500 ng/ml covering the range corresponding to concentrations reported in the plasma of aluminum intoxicated hemodialyzed patients. Aluminum inhibited iPTH release and caused severe cell alterations. This inhibition was incomplete and there was an aluminum insensitive iPTH capacity. This phenomenon seemed to be due to heterogeneous parathyroid cell population as regards to aluminum sensitivity, perhaps linked to the spontaneous aynchronous cyclic parathyroid cell changes. Sensitivity to aluminum was modulated by the extracellular calcium concentration. Sensitivity to extracellular calcium concentration variations persisted in aluminum intoxicated tissues. The severity of the observed cell lesions induced by high concentrations of aluminum suggested that that the recovery of an iPTH release capacity when parathyroid tissue was withdrawn from a toxic environment and switched to aluminum free media is more likely to be due to activation of a "less sensitive to aluminum" cell pool than to a true reversibility of the toxic effect.

For more Mechanism of Action (Complete) data for ALUMINUM, ELEMENTAL (11 total), please visit the HSDB record page.

Biological Half-Life · 5 items

Depends on duration of exposure; if over 10 years, then urinary: 6 months; if under 1 year, then urinary: 9 days;; [TDR, p. 75]

The mean plasma half-life of aluminum after iv admin in dogs is approx 4.5 hr.

...Workers exposed to aluminum containing welding fume had cleared 50% of their dose within 8 hr after exposure.

The short-term biological half-time after heavy exposure is estimated to be about 8 hrs.

A relationship between the duration of aluminum exposure and urinary concentrations has been found in humans. Welders exposed to 0.2-5.3 mg/cu m (8-hour workshift) for more than 10 years had a urinary aluminum half-time of at least 6 months compared to 9 days for individuals exposed for less than 1 year.

Metabolism/Metabolites · 1 item

Aluminum is poorly absorbed following oral or inhalation exposure and is essentially not absorbed dermally. The bioavailability of aluminum is strongly influenced by the aluminum compound and the presence of dietary constituents which can complex with aluminum and enhance or inhibit its absorption. Aluminum binds to various ligands in the blood and distributes to every organ, with highest concentrations found in bone and lung tissues. In living organisms, aluminum is believed to exist in four different forms: as free ions, as low-molecular-weight complexes, as physically bound macromolecular complexes, and as covalently bound macromolecular complexes. Absorbed aluminum is excreted principally in the urine and, to a lesser extent, in the bile, while unabsorbed aluminum is excreted in the faeces. (L739)

Uses & manufacturing

Uses · 6 items

Used in metal/alloys (electrical wires, construction, automobiles, aircraft, appliances, cooking utensils, and foil), compounds (cosmetics, deodorants, catalysts, flocculating agents for water treatment, and drugs), finely divided dusts and flakes (thermite welding and pyrotechnics), and aluminum alkyls (mainly catalysts); [ACGIH] Foods containing relatively large amounts of aluminum include spices, baking powder, processed cheese, pancake mixes, pickled vegetables, and tea; Highest occupational exposures are in aluminum powder production and welding (often >100 ug/L in urine), followed by electrolytic production and corundum production (sometimes >100 ug/L in urine), and then other industries in which workers' urine concentrations of Al are seldom >100 ug/L (electrolytic production with new technology, aluminum sulfate production, grinding, melting and foundry, and optoelectronic manufacturing; [Nordberg, p. 551-2]

Aluminum Producing [Category: Industry];Welding [Category: Weld];Metal Thermal Spraying [Category: Plate];Semiconductor Manufacturing [Category: Industry]

The active ingredient is no longer contained in any registered products ... "cancelled."

For aluminum powder (USEPA/OPP Pesticide Code: 000111) there are 0 labels match. /SRP: Not registered for current use in the U.S., but approved pesticide uses may change periodically and so federal, state and local authorities must be consulted for currently approved uses./

In manufacture of printing inks; in the aircraft industry

For absorbing occluded gases in manufacture of steel; ...dental alloys

Impurities · 3 items

Impurities: Silicon, iron, titanium, and vanadium

Other impurities: carbides of aluminum and iron, and the nitrides of aluminum and iron

Aluminas in general commerce that are used for smelting of metal presently contain over 99% aluminum oxides. The generally accepted levels of chemical impurities are under 0.005% of iron, titanium, zinc and sodium oxides, titanium dioxide, and vanadium and phosphorous pentoxides; crystalline silica dioxide content generally ranges between 0.01 and 0.02%.

U.S. Exports · 5 items

(1972) 2.39X10+11 GRAMS

(1975) 3.39X10+11 GRAMS

(1985) 9.80X10+11 g

(1999) 1,650 thousand metric tons

For more U.S. Exports (Complete) data for ALUMINUM, ELEMENTAL (8 total), please visit the HSDB record page.

U.S. Imports · 5 items

(1972) 6.73X10+11 GRAMS

(1975) 4.49X10+11 GRAMS

(1985) 1.40X10+12 g

(1999) 4,000 thousand metric tons

For more U.S. Imports (Complete) data for ALUMINUM, ELEMENTAL (8 total), please visit the HSDB record page.

U.S. Production · 6 items

2023: 15,000,000,000 - <20,000,000,000 lb;2022: 15,000,000,000 - <20,000,000,000 lb;2021: 15,000,000,000 - <20,000,000,000 lb;2020: 10,000,000,000 - <15,000,000,000 lb

(1972) 4.6X10+12 GRAMS (PRIMARY & SECONDARY)

(1975) 4.41X10+12 GRAMS

(1985) 4.28X10+12 g

(1991) 4.02x10+6 metric tons

For more U.S. Production (Complete) data for ALUMINUM, ELEMENTAL (10 total), please visit the HSDB record page.

Consumption Patterns · 4 items

24% used in manufacture of construction materials; 23% for cans, containers, and flexible packaging; 20% for transportation material and equipment; 12% for electrical equipment; 8% for appliances and durable equipment; 7% for fabricated machinery and parts; and 6% in other miscellaneous applications (1975)

Packaging, 38%; Transportation, 21%; Building, 16%; Electrical, 8%; Consumer Durables, 7%; and other uses, 10% (1985)

(2003) Aluminum consumption was centered in the east central United States. Transportation accounted for an estimated 35% of domestic consumption; the remainder was used in packaging, 24%; building, 16% consumer durables, 8%; electrical, 7% and other, 10%.

Recycling: In 2003, aluminum recovered from purchased scrap was about 2.8 million tons, of which about 60% came from new (manufacturing) scrap and 40% from old scrap (discarded aluminum products). Aluminum recovered from old scrap was equivalent to about 17% of apparent consumption.

Applications · 8 items

DescriptionAluminum is the third most abundant element in the crust of the earth, accounting for 8.13% by weight. It does not occur in free elemental form in nature, but is found in combined forms such as oxides or silicates. It occurs in many minerals including bauxite, cryolite, feldspar and granite. Aluminum alloys have innumerable application; used extensively in electrical transmission lines, coated mirrors, utensils, packages, toys and in construction of aircraft and rockets. aluminum powder

DescriptionAlthough aluminum was one of the last metals to be commercialized, it has been recognized for centuries. Aluminum was first recognized by the Romans as an astringent substance, and they called it ‘alum.’ By the middle ages it was manufactured as ‘alum stone,’ a subsulfate of alumina and potash. In 1825, Hans C. ersted was able to isolate a few drops of the raw material, and by 1886 it had patents from both Charles Martin Hall of the United States and Paul-Louis-Toussaint Heroult of France. Aluminum was commercialized in industry by the end of the nineteenth century.

OccurrenceAluminum is the third most abundant element found in the Earth’s crust. It is found inconcentrations of 83,200 ppm (parts-per-million) in the crust. Only the nonmetals oxygenand silicon are found in greater abundance. Aluminum oxide (Al2O3) is the fourth mostabundant compound found on Earth, with a weight of 69,900 ppm. Another alum-typecompound is potassium aluminum sulfate [KAl(SO4)212H2O]. Although aluminum is notfound in its free metallic state, it is the most widely distributed metal (in compound form) onEarth. Aluminum is also the most abundant element found on the moon.Almost all rocks contain some aluminum in the form of aluminum silicate minerals foundin clays, feldspars, and micas. Today, bauxite is the major ore for the source of aluminummetal. Bauxite was formed eons ago by the natural chemical reaction of water, which thenformed aluminum hydroxides. In addition to the United States, Jamaica and other Caribbeanislands are the major sources of bauxite. Bauxite deposits are found in many countries, butnot all are of high concentration.

HistoryThe ancient Greeks and Romans used alum in medicine as an astringent, and as a mordant in dyeing. In 1761 de Morveau proposed the name alumine for the base in alum, and Lavoisier, in 1787, thought this to be the oxide of a still undiscovered metal. Wohler is generally credited with having isolated the metal in 1827, although an impure form was prepared by Oersted two years earlier. In 1807, Davy proposed the name alumium for the metal, undiscovered at that time, and later agreed to change it to aluminum. Shortly thereafter, the name aluminium was adopted to conform with the “ium” ending of most elements, and this spelling is now in use elsewhere in the world. Aluminium was also the accepted spelling in the U.S. until 1925, at which time the American Chemical Society officially decided to use the name aluminum thereafter in their publications. The method of obtaining aluminum metal by the electrolysis of alumina dissolved in cryolite was discovered in 1886 by Hall in the U.S. and at about the same time by Heroult in France. Cryolite, a natural ore found in Greenland, is no longer widely used in commercial production, but has been replaced by an artificial mixture of sodium, aluminum, and calcium fluorides. Bauxite, an impure hydrated oxide ore, is found in large deposits in Jamaica, Australia, Suriname, Guyana, Russia, Arkansas, and elsewhere. The Bayer process is most commonly used today to refine bauxite so it can be accommodated in the Hall–Heroult refining process used to make most aluminum. Aluminum can now be produced from clay, but the process is not economically feasible at present. Aluminum is the most abundant metal to be found in the Earth’s crust (8.1%), but is never found free in nature. In addition to the minerals mentioned above, it is found in feldspars, granite, and in many other common minerals. Twenty-two isotopes and isomers are known. Natural aluminum is made of one isotope, 27Al. Pure aluminum, a silvery- white metal, possesses many desirable characteristics. It is light, nontoxic, has a pleasing appearance, can easily be formed, machined, or cast, has a high thermal conductivity, and has excellent corrosion resistance. It is nonmagnetic and nonsparking, stands second among metals in the scale of malleability, and sixth in ductility. It is extensively used for kitchen utensils, outside building decoration, and in thousands of industrial applications where a strong, light, easily constructed material is needed. Although its electrical conductivity is only about 60% that of copper, it is used in electrical transmission lines because of its light weight. Pure aluminum is soft and lacks strength, but it can be alloyed with small amounts of copper, magnesium, silicon, manganese, and other elements to impart a variety of useful properties. These alloys are of vital importance in the construction of modern aircraft and rockets. Aluminum, evaporated in a vacuum, forms

UsesAluminum finds wide applications for industrialand domestic purposes. Fine powder isused in explosives, in fireworks, as flashlightsin photography, and in aluminumpaints. It is commonly used in alloys withother metals and is nonhazardous as alloys.

UsesAluminum is a very versatile metal with many uses in today’s economy, the most common ofwhich are in construction, in the aviation-space industries, and in the home and automobile industries.Its natural softness is overcome by alloying it with small amounts of copper or magnesium thatgreatly increase its strength. It is used to make cans for food and drinks, in pyrotechnics, for protectivecoatings, to resist corrosion, to manufacture die-cast auto engine blocks and parts, for homecooking utensils and foil, for incendiary bombs, and for all types of alloys with other metals.Aluminum does not conduct electricity as well as copper, but because it is much lighter inweight, it is used for transmission lines, though not in household wiring. A thin coating ofaluminum is spread on glass to make noncorroding mirrors. Pure oxide crystals of aluminumare known as corundum, which is a hard, white crystal and one of the hardest substancesknown. Corundum finds many uses in industry as an abrasive for sandpaper and grindingwheels. This material also resists heat and is used for lining high-temperature ovens, to formthe white insulating part of spark plugs, and to form a protective coating on many electronicdevices such a transistors.Aluminum oxide is used to make synthetic rubies and sapphires for lasers beams. It hasmany pharmaceutical uses, including ointments, toothpaste, deodorants, and shaving creams.

UsesAs pure metal or alloys (magnalium, aluminum bronze, etc.) for structural material in construction, automotive, electrical and aircraft industries. In cooking utensils, highway signs, fencing, containers and packaging, foil, machinery, corrosion resistant chemical equipment, dental alloys. The coarse powder in aluminothermics (thermite process); the fine powder as flashlight in photography; in explosives, fireworks, paints; for absorbing occluded gases in manufacture of steel. In testing for Au, As, Hg; coagulating colloidal solutions of As or Sb; pptg Cu; reducer for determining nitrates and nitrites; instead of Zn for generating hydrogen in testing for As. Forms complex hydrides with lithium and boron, such as LiAlH4, which are used in preparative organic chemistry.

General DescriptionAluminum metal held above melting point of 1220°F (660°C) for ease in handling. Cools and solidifies if released. Contact causes thermal burns. Plastic or rubber may melt or lose strength upon contact. Protective equipment designed for chemical exposure only is not effective against direct contact. Take care walking on the surface of a spill to avoid stepping into a pocket of molten aluminum below the crust. Do not attempt to remove aluminum impregnated clothing because of the danger of tearing flesh if there has been a burn.

Additional notes · 1 item

Definitionaluminium: Symbol Al. A silverywhitelustrous metallic element belongingto group 3 (formerly IIIB) ofthe periodic table; a.n. 13; r.a.m.26.98; r.d. 2.7; m.p. 660°C; b.p.2467°C. The metal itself is highly reactivebut is protected by a thintransparent layer of the oxide, whichforms quickly in air. Aluminium andits oxide are amphoteric. The metalis extracted from purified bauxite(Al2O3) by electrolysis; the mainprocess uses a Hall–Heroult cell butother electrolytic methods are underdevelopment, including conversionof bauxite with chlorine and electrolysisof the molten chloride. Pure aluminiumis soft and ductile but itsstrength can be increased by workhardening.A large number of alloysare manufactured; alloying elementsinclude copper, manganese, silicon,zinc, and magnesium. Its lightness,strength (when alloyed), corrosion resistance,and electrical conductivity(62% of that of copper) make it suitablefor a variety of uses, includingvehicle and aircraft construction,building (window and door frames),and overhead power cables. Althoughit is the third most abundantelement in the earth’s crust (8.1% byweight) it was not isolated until 1825by H. C. Oersted.

Related reactions

886 records

Linked notes

Loading…