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Platin

Platinum

HCID 23939
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Grundinformationen

CAS
7440-06-4
Standard-SMILES
[Pt]
InChIKey
BASFCYQUMIYNBI-UHFFFAOYSA-N
Summenformel
Pt
Durchschnittliche Molmasse
195,08 g/mol
Monoisotopische Masse
194,964794

Überblick

Silvery, whitish-gray, malleable, ductile metal. Mp: 1772 °C; bp: 2187 °C. Density: 21.45 g cm-3 at room conditions (very dense). Also shipped as a finely divided powder (platinum black), as a sponge, and as particles deposited on a supporting material such as alumina. Has strong catalytic activity in these forms; finely divided platinum can be dangerous to handle in the vicinity of other chemicals on this account. Used platinum catalysts are particularly dangerous and can be explosive.

Namen und Bezeichner

Bevorzugter Name
Platinum
IUPAC
platinum
Lokaler Name
Platin
Englischer Name
Platinum
Summenformel
Pt
Molmasse
195.08

Namen und Synonyme

PLATINUM7440-06-4Platinum BlackPlatinum spongePlatinPlatinum powderPlatinum, elementalPlatinum metallicumPTLiquid bright platinumPlatina lMetallic platinum
Weitere Namen anzeigen
PLATINUM ON CARBONPLATINIUMPLATINUM CARBONPLATINUM CATALYSTESCAT 2351conductive paste
C.I. 7779549DFR088MYDTXSID9064681CHEBI:33364CHEBI:33400Neuralgia NumbnessRefChem:929411Platinum metallicum 200C

Datenbank-Bezeichner

CAS
7440-06-4
PubChem CID
23939
DTXSID
DTXSID9064681
ChEMBL
CHEMBL1235478
ChEBI
CHEBI:33364
UNII
49DFR088MY
EC Number
231-116-1
Nikkaji
J312.401K、J33.611D

Eigenschaften

Berechnete Struktureigenschaften

Polarare Oberfläche (TPSA)
0 Ų
H-Brücken-Donoren
0
H-Brücken-Akzeptoren
0
Frei drehbare Bindungen
0
Schwere Atome
1
Formalladung
0
Komplexität
0

Experimentelle und physikochemische Eigenschaften

Chemical Classes · 3 Einträge

Metals -> Metals, Inorganic Compounds

Metals -> Elements, Metallic

Flammable agents - 3rd degree

SpringerMaterials Propertiesthermal expansion coefficient
LogP0.03
Density · 6 Einträge

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

21.447 (calc)

21.45 g/cm³

21.45

21.45 @25 °C

21.45

Color/FormSilver-gray, lustrous, malleable and ductile metal; face-centered cubic structure. Also prepd in the form of a black powder (platinum black) and as spongy masses (platinum sponge).
Solubility · 4 Einträge

Insoluble (NIOSH, 2024)

Soluble in aqua regia. Insoluble in mineral and organic acids.

Solubility in water: insoluble

Insoluble

CorrosivityDoes not corrode or tarnish
Boiling Point · 6 Einträge

6921 °F at 760 mmHg (NIOSH, 2024)

Sicherheit und Regulatorisches

Sicherheitsangaben dienen nur zur Orientierung und ersetzen weder das Sicherheitsdatenblatt (SDB) des Lieferanten noch geltende Vorschriften oder eine fachliche Bewertung.

GHS-Klassifizierung

GHS Classification · 6 Einträge

This chemical does not meet GHS hazard criteria for 81.3% (410 of 504) of all reports.

Danger

H228 (10.7%): Flammable solid [Danger Flammable solids]

P210, P240, P241, P280, and P370+P378 (click each P-code to see the statement)

Aggregated GHS information provided per 504 reports by companies from 13 notifications to the ECHA C&L Inventory.

Danger

Gefahrenhinweise

Regulatory Information · 4 Einträge

Chemical: Platinum

REACH registered substance: Platinum (EC: 231-116-1)

Platinum: 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 - Platinum: Human health tier I assessment
DOT LabelFlammable Solid
Fire Hazards · 2 Einträge

Excerpt from ERG Guide 170 [Metals (Powders, Dusts, Shavings, Borings, Turnings, or Cuttings, etc.)]:

See Chemical dangers

Fire PotentialFlammable in a state of powder.
Health HazardsExcerpt from NIOSH Pocket Guide for Platinum:
Hazards Summary · 2 Einträge

The allergenic compounds appear to be limited to the coordination complexes containing halogen ligands as leaving groups with the most potent examples being hexa- and tetrachloroplatinates. [Nordberg, p. 1138] Occupational asthma reported in platinum refinery; [Malo] Allergic contact dermatitis in electronics workers; [Marks] Platinum salts can cause immunologic, occupational contact urticaria; [Kanerva, p. 219] There is evidence from pharmacologic use that platinum is nephrotoxic. [Rosenstock, p. 572]

Chemie und Industrie

Pharmakologische Informationen

Absorption, Distribution and Excretion · 1 Eintrag

Platinum is rapidly distributed to most tissues of the body, with a large proportion of the dose being excreted within a few hours. This initial high plasma concentration falls quickly, and the great majority of the remaining Pt is protein bound. Platinum is mainly excreted in the urine ... .

Verwendung und Herstellung

Uses · 6 Einträge

Platinum is used as a catalyst in petroleum refining and in catalytic converters for automobile exhaust. [ACGIH] Platinum is used in the following industries: automotive, chemical, petroleum, electrical, jewelry, pharmaceutical, ceramics, dental, and plastics. [Harber, p. 473] Platinum chloride used in photography (toner and platinum printing); [www.ci.tucson.az.us/arthazards/medium.html] Workers are exposed to platinum in plants for the production and recycling of catalytic converters; [Reference #2]

Petroleum Production and Refining [Category: Industry]

Jewelry making [Category: Hobbies]

Found alloyed with iridium, osmium, palladium, rhodium, and ruthenium in gravels and sands; [Merck Index] Used to make apparatus for laboratory and industrial use (thermocouples, platinum resistance thermometers, acid proof containers, electrodes, etc.); in dentistry, jewelry, and electroplating; in spinnerets for making rayon, electrical contacts, and glass fiber; in permanent magnets; to increase the octane number of liquid fuels; in automobile catalytic converters; as catalyst for curing of plastics; as catalyst for dehydrogenation, isomerization, and oxidation in the production of sulfuric, nitric, and organic acids and amines; for surgical instruments and implants; Platinum nanoparticles are used in scanning probes (microscopy) and catalysts; [HSDB]

Metal Preparation and Pouring [Category: Foundry]

Jewelry making [Category: Hobbies]

U.S. Exports(1999) 19,400 kg; (1998) 14,300 kg; (1997) 23,000 kg; (1996) 12,700 kg; (1995) 15,000 kg
U.S. Imports(1999) 129,000 kg; (1998) 96,700 kg; (1997) 77,300 kg; (1996) 75,800 kg; (1995) 71,500 kg

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3825 °C

3827 °C

6921 °F

3825 °C @760 [mm Hg]

6921 °F

Melting Point · 6 Einträge

3222 °F (NIOSH, 2024)

1772 °C.

1768.4 °C

1768.3 °C

1769 °C

3222 °F

Vapor Pressure · 5 Einträge

0 mmHg (approx) (NIOSH, 2024)

0.0187 Pa @ melting point

0 mmHg (approx)

depends upon the specific compound

0 mmHg (approx)

Physical Description · 6 Einträge

Silvery, whitish-gray, malleable, ductile metal. Mp: 1772 °C; bp: 2187 °C. Density: 21.45 g cm-3 at room conditions (very dense). Also shipped as a finely divided powder (platinum black), as a sponge, and as particles deposited on a supporting material such as alumina. Has strong catalytic activity in these forms; finely divided platinum can be dangerous to handle in the vicinity of other chemicals on this account. Used platinum catalysts are particularly dangerous and can be explosive.

Appearance and odor vary depending upon the specific soluble platinum salt. [NIOSH]

Silver-grey lustrous solid; Also available as black powder (platinum black) and spongy solid (platinum sponge); [Merck Index]

Solid

BLACK POWDER.

Silvery, whitish-gray, malleable, ductile metal.

Other Experimental Properties · 3 Einträge

Sp heat: 0.0314 cal/g at 0 °C. Electrical resistivity: (20 deg) 10.6 uohm-cm.

/Platinum/ occurs naturally mainly as the isotopes (194)Pt, (195)Pt, and (196)Pt.

Heated platinum adsorbs large amounts of hydrogen; it is a strong complexing agent.

Physikochemische Eigenschaften

Schmelzpunkt
1772 °C · 1772 °C (lit.)
Siedepunkt
3827 °C · 3827 °C (lit.)
Dichte
21.45 g/cm3 · 21.45 g/cm3 (lit.)
Brechungsindex
20 · n20/D 1.347
Flammpunkt
3825 °C · 3825°C
storage temp.
2 · 2-8°C
Löslichkeit
Soluble in hot aqua regia.
Aggregatzustand
wire
Farbe
White
Wichte
21.45 · 21.45
PH
0.5 · 0.5 (20°C in H2O)
Wasserlöslichkeit
Insoluble
Spezifische Wärmekapazität
0.13 J/ · Cp(crystal): 0.13 J/(g·K); Cp(gas): 0.13 J/(g·K), at 25℃
Merck
14 · 14,7529
Dielectric constant
6.5 · 6.5(Ambient)
Stabilität
Stable. Platinum black is highly flammable.
Kosmetik-Inhaltsstoffe Funktionen
SKIN CONDITIONINGSKIN CONDITIONING - MISCELLANEOUSDEODORANTANTIMICROBIALABRASIVEANTIOXIDANT
InChI
1S/Pt
InChIKey
BASFCYQUMIYNBI-UHFFFAOYSA-N
SMILES
[Pt]
CAS Datenbank
7440 · 7440-06-4(CAS DataBase Reference)
NIST chemische Informationen
Platinum(7440-06-4)
EPA chemische Informationen
Platinum (7440-06-4)

A skin, eye, and respiratory tract irritant; [Merck Index] Catalytic material that is fire and explosion hazard on contact with many organic and inorganic substances; An eye and respiratory tract irritant; (powdered form) [ICSC] Platinum oxides and soluble platinum salts are sensitizers. Platinum is nontoxic in the metallic state, except possibly for the fine powdered form. [Sullivan, p. 911, 913] Platinum dust is inert and nonallergenic; [Nordberg, p. 1136] Tram drivers in Rome were exposed to Pt, Rh and Pd from catalytic converters at levels about 10 times lower than those known to cause adverse effects in workers. [PMID 18849761] In a study of platinum nanoparticles, platinum ions were not released into the culture media suggesting minimal cellular influence; [PMID 21804981] See Platinum, soluble salts.

Reactive GroupMetals, Less Reactive
Reactivity AlertsKnown Catalytic Activity
Reactivity Profile · 1 Eintrag

Massive platinum (lump, ingot, etc.) is generally inert. Dissolves readily in aqua regia (mixture of concentrated hydrochloride and concentrated nitric acids). Reacts rapidly with molten alkali metal oxides and peroxides. Reacts with F2 and Cl2 at red heat. Absorbs large volumes of hydrogen when hot. Catalyzes the exothermic oxidation of ammonia by air. Finely divided platinum is incompatible with aluminum, acetone, arsenic, ethane, hydrazine, hydrogen peroxide, lithium, phosphorus, selenium, tellurium and many fluorides. Explosion can occur upon contact with hydrogen peroxide. Platinum black, sponge and supported catalysts have strong catalytic activity; can be dangerous to handle in the vicinity of other chemicals on this account. Used platinum catalysts are particularly dangerous and can cause explosions. Ethanol or methanol can ignite on contact with a platinum-black catalyst. (Urben 1794).

Chemical DangersPlatinium is a catalytic substance and may cause reaction in contact with many organic and inorganic substances, causing fire and explosion hazard.
Flammable LimitsNoncombustible Solid in bulk form, but finely divided powder can be dangerous to handle.

Sicherheit und Schutzausrüstung

Fire Fighting · 2 Einträge

Excerpt from ERG Guide 170 [Metals (Powders, Dusts, Shavings, Borings, Turnings, or Cuttings, etc.)]:

In case of fire in the surroundings, use appropriate extinguishing media.

First Aid Measures · 4 Einträge

Fresh air, rest.

Remove contaminated clothes. Rinse and then wash skin with water and soap.

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

Rinse mouth. Refer for medical attention .

First Aid · 2 Einträge

Excerpt from NIOSH Pocket Guide for Platinum:

(General first aid procedures)

Safe StorageWell closed.
Cleanup Methods · 1 Eintrag

Persons not wearing protective equipment and clothing should be restricted from areas of spills until cleanup has been completed. If soluble platinum salts or liquids containing soluble salts are spilled, the following steps should be taken: 1. Ventilate area of spill; 2. Collect spilled material in the most convenient and safe manner for reclamation or for disposal in a secured sanitary landfill. Liquids containing soluble platinum salts should be absorbed in vermiculite, dry sand, earth, or a similar material, /Soluble platinum salts/

Nonfire Spill ResponseExcerpt from ERG Guide 170 [Metals (Powders, Dusts, Shavings, Borings, Turnings, or Cuttings, etc.)]:
Disposal Methods · 1 Eintrag

SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.

Spillage Disposal · 1 Eintrag

Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Then store and dispose of according to local regulations.

Preventive Measures · 5 Einträge

Adequate ventilation and protectors. Induce workers to wash constantly.

Eating and smoking should not be permitted in areas where soluble platinum salts or liquids containing soluble platinum salts are handled, processed, or stored. Employees who handle soluble platinum salts or liquids containing soluble platinum salts should wash their hands thoroughly before eating, smoking, or using toilet facilities. /Soluble platinum salts/

Respirators may be used when engineering and work practice controls are not technically feasible, when such controls are in the process of being installed, or when they fail and need to be supplemented. ... If the use of respirators is necessary, the only respirators permitted are those that have been approved by the Mine Safety and Health Admin (formerly Mining Enforcement & Safety Admin) or by the National Institute for Occupational Safety & Health. In addition to respirator selection, a complete respiratory protection program should be instituted which includes regular training, maintenance, inspection, cleaning, and evaluation. /Soluble platinum salts/

Control can only be achieved by preventing the release of the soluble complex platinum salts to the atmosphere of the workshop. Good exhaust ventilation is necessary in platinum refineries. Chemical procedures which may generate these salts should be carried out in ventilated fume cupboards. Open centrifuges should not be used. Good personal hygiene is important. /Platinum compounds/

For more Preventive Measures (Complete) data for PLATINUM (10 total), please visit the HSDB record page.

Isolation and EvacuationExcerpt from ERG Guide 170 [Metals (Powders, Dusts, Shavings, Borings, Turnings, or Cuttings, etc.)]:
Eye PreventionWear safety goggles.
Inhalation RiskEvaporation at 20 °C is negligible; a nuisance-causing concentration of airborne particles can, however, be reached quickly , especially if powdered.

Toxikologische Informationen

Target OrgansEyes, skin, respiratory system
Adverse EffectsNephrotoxin - The chemical is potentially toxic to the kidneys in the occupational setting.
Exposure Routes · 2 Einträge

The substance can be absorbed into the body by inhalation.

inhalation, ingestion, skin and/or eye contact

Signs and Symptoms · 3 Einträge

Cough. Sore throat.

Redness. Pain.

irritation skin, respiratory system; dermatitis

Human Toxicity Excerpts · 4 Einträge

Platinum metal itself is not associated with any neurological diseases ... .

Clinical signs & symptoms of platinum exposure & toxicity via inhalation & dermal routes are those of classic allergic reactions & include irritation of the eyes & nose; cough, dyspnea, wheezing, & cyanosis; skin sensitization; & lymphocytosis.

Effects on human sperm motility were investigated ... Fresh sperm were incubated for up to5 hr in the presence of strips of platinum or other metals. Motility after 2 and 5 hr was 60 and 30%, respectively, compared to 10 and 0% for copper, 40 and 7% for silver, and 90 and 65% for gold.

Some workers may show ... allergic manifestations with involvement of the nasal mucosa, bronchi and skin. /Platinum cmpd/

Non-Human Toxicity Excerpts · 2 Einträge

Platinum wire inserted into the uterus of rats was reported to reduce the implantation of fertilized ova. An 83% reduction in the number of implantation sites in the affected uterine horn, compared to the unoperated horn, was found in rats unilaterally implanted on day 3. ... No effect /was found/ on embryonic or fetal survival if platinum wire was inserted after implantation on day 6.

... Normal fertility /was found/ in male rabbits with open tube gold/platinum devices inserted into the vas deferens. There was an initial decrease in sperm count and motility, but these parameters returned to normal after three weeks. At 117-426 days after insertion, 7 out of 9 animals were fertile in numerous matings.

Antidote and Emergency Treatment · 2 Einträge

Basic treatment: Establish a patent airway. Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if needed. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for pulmonary edema and treat if necessary ... . Monitor for shock and treat if necessary ... . Anticipate seizures and treat if necessary ... . For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with normal saline during transport ... . Do not use emetics. For ingestion, rinse mouth and administer 5 ml/kg up to 200 ml of water for dilution if the patient can swallow, has a strong gag reflex, and does not drool ... . Cover skin burns with dry sterile dressings after decontamination ... . /Poison A and B/

Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious, has severe pulmonary edema, or is in respiratory arrest. Positive pressure ventilation techniques with a bag valve mask device may be beneficial. Monitor cardiac rhythm and treat arrhythmias as necessary ... . Start an IV with D5W /SRP: "To keep open", minimal flow rate/. Use lactated Ringer's if signs of hypovolemia are present. Watch for signs of fluid overload. Consider drug therapy for pulmonary edema ... . For hypotension with signs of hypovolemia, administer fluid cautiously. Watch for signs of fluid overload ... . Treat seizures with diazepam (Valium) ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Poison A and B/

Sicherheitsdaten

OEB
C
OEL
TWA: 1 mg/m3
wgk
3
IDLA
4 mg Pt/m3
tsca
TSCA listed
ridadr
UN 3264 8/PG 3
hs_code
2843900030
RTECS-Nr.
TP2160000
risk_code
11-37-20-36/37/38-36/37-40-42/43-22-50/53
hazard_code
F,Xi,Xn,N
safety_code
36-7/9-33-16-38-22-26-14-36/37/39-27-24/25-36/37-45-23-61-60
hazard_class
4.1
packing_group
III
Speicherklasse
13 - Non Combustible Solids
Giftige Stoffe Daten
7440-06-4(Hazardous Substances Data)
U.S. Production · 2 Einträge

Mine: (1999) 2,920 kg; (1998) 3,240 kg; (1997) 2,610 kg; (1996) 1,840 kg; (1995) 1,590 kg

Refinery: (1999) 14,000 kg

Methods of Manufacturing · 2 Einträge

By dissolving the ore concentrate in aqua regia, precipitating the platinum by ammonium chloride as ammonium hexachloroplatinate, igniting the precipitate to form platinum sponge. This is then melted in an oxyhydrogen flame or in an electric furnace.

Nickel refinery anode slimes/copper anodic slimes/ Mond process residues (sulfating roast process/ hydrometallurgical refining; coproduced with gold/silver/palladium/selenium/tellurium)

Formulations/Preparations · 2 Einträge

Grade: Physically pure (99.99%), chemically pure (99.99%), crucible platinum (99.5%), commercial (99.0%).

Forms available: Powder (platinum black), single crystals, wire (2 by 0.05 inches diameter); special composition for electronics, metallizing and decorating ceramics and metals.

General Manufacturing Information · 2 Einträge

Platinum: ACTIVE

Nickel, osmium, ruthenium, copper, gold, silver and iridium are alloyed with platinum to increase hardness. Commercially important alloys of platinum are prepared with copper, gold, iridium, rhodium and ruthenium. Alloys with cobalt have become important because of their strong ferromagnetic properties.

Anwendungen · 3 Einträge

BeschreibungPlatinum was discovered in Colombia, South America by Ulloa in 1735 and six years later in 1741 by Wood. The metal was isolated from native platinum by Delisle in 1775 and produced in malleable form by Chabaneau in 1786. Wollaston in 1803 developed a method of obtaining pure malleable platinum from crude platinum by extraction with aqua regia. The process led to the discovery of two other platinum group metals, palladium and rhodium, that were found in the aqua regia extract after platinum precipitated. Platinum derived its name from platina originating from the Spanish word plata for silver, because it was thought to be a trivial unwanted material associated with gold in gold mines of Central America. Platinum occurs in nature as a bright-white cubic crystalline solid with metallic luster associated with other noble metals of its group. Platinum also occurs as the mineral sperrylite, PtAs2, found as tin-white brittle cubic crystals containing 52−57% platinum in certain nickel-bearing deposits. Some other minerals of platinum are cooperite PtS (Pt 80-86%); and braggite(Pt, Pd, Ni)S (Pt 58-60%). The abundance of platinum in the earth’s crust is estimated to be 0.005 mg/kg.

OccurrencePlatinum is the 75th most abundant element and, unlike many elements, is found in itspure elemental form in nature, as are deposits of silver and gold. Platinum is widely distributedover the Earth and is mined mainly in the Ural Mountains in Russia and in South Africa,Alaska, the western United States, Columbia in South America, and Ontario in Canada.When found in the mineral sperrylite (PtAs2), it is dissolved with aqua regia to form a precipitatecalled “sponge” that is then converted into platinum metal. It is also recovered as aby-product of nickel mining, mainly in Ontario, Canada.

Verwendenmanufacture of apparatus for laboratory and industrial use, thermocouples, platinum resistance thermometers, acidproof containers, electrodes, etc. In dentistry; jewelry; electroplating. As oxidation catalyst in manufacture of acetic acid, nitric acid from ammonia, manufacture of sulfuric acid; control of automotive emissions.

Vor- und nachgelagerte Produkte

Vorgelagerte Rohstoffe

Nitrohydrochloric acidAmmoniak, wssrige LsungSchwefeldioxidChlorAmmoniumchloroplatinatAmmoniumchloridNatriumchloratSchwefelsure

Nachgelagerte Produkte

Xylol, Isomerengemisch1-Methyl-[4,4']bipiperidinylHexachloroplatinsureInosin 5'-monophosphatdinatriumsalzhydratStyrolToluolPiperidin-4-ethanolCyclopentanolBenzolInosinSalpetersureVinylacetatDextranDL-CARNITINEPlatinhexafluorid
Ergänzende Hinweise · 1 Eintrag

DefinitionA silvery-white malleable ductile transition metal. It occurs naturally in Australia and Canada, either free or in association with other platinum metals. It is resistant to oxidation and is not attacked by acids (except aqua regia) or alkalis. Platinum is used as a catalyst for ammonia oxidation (to make nitric acid) and in catalytic converters. It is also used in jewelry. Symbol: Pt; m.p. 1772°C; b.p. 3830 ± 100°C; r.d. 21.45 (20°C); p.n. 78; r.a.m. 195.08.