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HCID 24414Erstellt: 27. Oktober 2026

Barit (Ba(SO4))

Barium sulphate · Barite · Barite (Ba(SO4)) · Einecs 236-664-5 · Barite USP/EP/BP · Barium sulfate,natural · Barium Sulphate (BaSO4) · API BARITE (BIG BAG) 4.2 SG

https://huagongshe.com/de/chemical/24414

Molekülstruktur von Barit (Ba(SO4))

Identifikatoren & physikalische Daten

CAS No.13462-86-7
SummenformelBaSO4
Durchschnittliche Molmasse233,39 g/mol
Monoisotopische Masse233,85697668 g/mol
SMILESO=S(=O)([O-])[O-].[Ba+2]
InChIKeyTZCXTZWJZNENPQ-UHFFFAOYSA-L
PubChem CID24414
ChEMBLCHEMBL2105897
ChEBICHEBI:133326
EC No.231-784-4
DTXSIDDTXSID0050471
Lokaler NameBarit (Ba(SO4))

Chemische & physikalische Eigenschaften

Polarare Oberfläche (TPSA)88,6
H-Brücken-Donoren0
H-Brücken-Akzeptoren4
Frei drehbare Bindungen0
Schwere Atome6
Formalladung0
Komplexität62,2
StoffklassenMetals -> Metals, Inorganic Compounds
PolymersPlastics -> Pigments agentsPlastics -> Polyolefin-IPURPolyolefin-IIPVC (soft)ABSPVC (rigid)PETPMMAPAPC(E)PS
KosmetikaCosmetic ingredients (Barium Sulfate) -> CIR (Cosmetic Ingredient Review)Cosmetic colorantOpacifying
pH5% suspension in water is neutral to litmus paper
GeruchOdorless
GeschmackTasteless
Dichte4.25 to 4.5 (NIOSH, 2024)4.49 g/cu cm4.5 g/cm³4.25-4.54.49 @25 °C4.300 g/cm3
Color/FormFine, heavy powder or polymorphous crystalsWhite, orthorhombic crystalsWhite or yellowish powderOpaque powder
Löslichkeit0.0002 % at 64 °F (NIOSH, 2024)Very slightly soluble in cold waterSOLUBILITY IN WATER INCREASES CONSIDERABLY IN PRESENCE OF CHLORIDE & OTHER ANIONS0.00031 g/100 g water at 20 °Cinsol in ethanolSoluble in hot concentrated sulfuric acidpractically insoluble in dilute acids and alcoholPractically insoluble in organic solventsvery slightly soluble in alkalis and in solution of many salts
Human DrugsBreast FeedingLactationContrast MediaBarium CompoundsFDA approved drugs -> Active ingredientDiagnostic agents > Radiocontrast media
Siedepunkt2912 °F at 760 mmHg (Decomposes) (NIOSH, 2024)2912 °F (decomposes)
DecompositionWhen heated to decomposition it emits toxic fumes of /sulfur oxides/.Decomposes above 1600 °C
InChIInChI=1S/Ba.H2O4S/c1-5(2,3)4/h(H2,1,2,3,4)/q+2/p-2
InChIKeyTZCXTZWJZNENPQ-UHFFFAOYSA-L
SMILESS([O-])([O-])(=O)=O.[Ba+2]
EPA chemische InformationenBarite (13462-86-7)

Sicherheit & Vorschriften

GHS-EinstufungThis chemical does not meet GHS hazard criteria for 91% (1648 of 1811) of all reports.Not ClassifiedAggregated GHS information provided per 1811 reports by companies from 18 notifications to the ECHA C&L Inventory.This chemical does not meet GHS hazard criteria for 83.4% (276 of 331) of all reports.WarningH302 (16.6%): Harmful if swallowed [Warning Acute toxicity, oral]
Regulatorische InformationenChemical: Sulfuric acid, barium salt (1:1)Chemical: Barite (Ba(SO4))Sulfuric acid, barium salt (1:1) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Sulfuric acid, barium salt (1:1) 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)Barite (Ba(SO4)) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Barite (Ba(SO4)) 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: 01-12-2022 https://echa.europa.eu/registration-dossier/-/registered-dossier/15235Barytes: Does not have an individual approval but may be used under an appropriate group standard
Weitere SicherheitsinformationenIMAP assessments - Barite (Ba(SO4)): Human health tier I assessmentIMAP assessments - Sulfuric acid, barium salt (1:1): Human health tier I assessment
DOT-KennzeichnungPoison
BrandgefahrenExcerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.
BrandpotenzialNot combustible.
GesundheitsgefahrenExcerpt from NIOSH Pocket Guide for Barium sulfate:
GefahrenübersichtTLV Basis: PneumoconiosisTherefore, because barium sulfate is a relatively low toxicity particle, but high levels of particles can cause inflammation or a benign pneumoconiosis, a TLV-TWA of 5 mg/m3 or inhalable particulate matter containing no asbestos and < 1% crystalline silica is recommended. [ACGIH] See the disease Pneumoconioses, benign.

Anwendungen & Verwendung

Occurrence

Barite is a frequent fluorescent,most commonly displaying a not very saturated or intense light yellow color. Barite is found as beautiful and showy crystals in several places in South Dakota, particularly in the area of the Cheyenne and Moreau rivers.The barite crystals are tan to brown, glassy and transparent. Under short wave ultraviolet, these barites fluoresce butter yellow.Often there is a phosphorescence, usually a strong green-white.Accompanying calcite also fluoresces yellow, but more orange than the barite, and the combination of barite and calcite makes an attractive fluorescent combination.Barite is found as white to tan flat crystals standing on fluorite from the Buckskin Mountains, Yuma County, Arizona. This barite fluoresces orange-tan under long wave ultraviolet,while the fluorite responds with its usual blue，forming another attractive two-color fluorescent combination.Barite is also found at Bingham, New Mexico, as thick,white, blady crystals with fluorite. In these specimens, the barite fluoresces deep pink or weak red while the fluorite fluoresces blue,under long wave. Weak red fluorescing barite with fluorescing fluorite is also found at Elmwood, Tennessee.

Verwenden

Barite also is used as a filler, extender, or weighting agent in products such as paints, plastics, and rubber. Some specific applications include use in automobile brake and clutch pads, automobile paint primer for metal protection and gloss, use as a weighting agent in rubber, and in the cement jacket around underwater petroleum pipelines. In the metal-casting industry, barite is part of the mold-release compounds. Because barite significantly blocks x-ray and gamma-ray emissions, it is used as aggregate in high-density concrete for radiation shielding around x-ray units in hospitals, nuclear powerplants, and university nuclear research facilities. Ultrapure barite is used as a contrast medium in x-ray and computed tomography examinations of the gastrointestinal tract.

DOT-Nummer und Handbuch1564 154(barium compound, n.o.s.)
FDA-AnforderungenBarium sulfate is an indirect food additive for use only as a component of adhesives.
Reaktive GruppeSalts, Basic
RCRA-AnforderungenD005A solid waste containing barium may or may not become characterized as a hazardous waste when subjected to the Toxicity Characteristic Leaching Procedure listed in 40 CFR 261.24, and if so characterized, must be managed as a hazardous waste. /Barium/
FIFRA-AnforderungenResidues of barium sulfate are exempted from the requirement of a tolerance when used in accordance with good agricultural practice as inert (or occasionally active) ingredients in pesticide formulations applied to growing crops only. Use: carrier.Residues of barium sulfate are exempted from the requirement of a tolerance when used in accordance with good agricultural practice as inert (or occasionally active) ingredients in pesticide formulations applied to animals. Use: carrier, density control agent.
BrandbekämpfungExcerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:In case of fire in the surroundings, use appropriate extinguishing media.
Erste-Hilfe-MaßnahmenFresh air, rest.Remove contaminated clothes. 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.
Erste HilfeExcerpt from NIOSH Pocket Guide for Barium sulfate:(General first aid procedures)
Expositionsschutz und Persönliche SchutzausrüstungTIH (Toxic Inhalation Hazard) - Term used to describe gases and volatile liquids that are toxic when inhaled. Some are TIH materials themselves, e.g., chlorine, and some release TIH gases when spilled in water, e.g., chlorosilanes. [ERG 2016].4.0 [mg/m3] (inhalable fraction), 0.3 mg/m3 (respirable fraction)[German Research Foundation (DFG)]
BrandbekämpfungsverfahrenUse dry chemical, carbon dioxide, water spray, or alcohol foam extinguishers ... If material or contaminated runoff enters waterways, notify downstream users of potentially contaminated waters. Notify local health and fire officials and pollution control agencies. From a secure, explosion-proof location, use water spray to cool exposed containers. If cooling streams are ineffective (venting sound increases in volume and pitch, tank discolors or shows any signs of deforming), withdraw immediately to a secure position ... The only respirators recommended for fire fighting are self-contained breathing apparatuses that have full facepieces and are operated in a pressure-demand or other positive-pressure mode.If material on fire or involved in fire: Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Use foam, dry chemical, or carbon dioxide. Keep run-off water out of sewers and water sources. /Barium compounds, NOS/Wear positive pressure self-contained breathing apparatus. /Barium compounds NOS/
LagerbedingungenStore at 25 °C (77 °F)excursions permitted to 15 to 30 °C (59 to 86 °F)Store in tightly closed containers in a cool, well ventilated area away from incompatible materials ... A regulated, marked area should be established where this chemical is handled, used, or stored ...
ReinigungsverfahrenSpill handling: evacuate and restrict persons not wearing protective equipment from area of spill or leak until cleanup is complete. Remove all ignition sources. Collect powdered material in the most convenient and safe manner and deposit in sealed containers. Ventilate area of spill or lead after clean-up is complete. It may be necessary to contain and dispose of this chemical as a hazardous waste. If material or contaminated runoff enters waterways, notify downstream users of potentially contaminated waters. Contact your Department of Environmental Protection or your regional office of the federal EPA for specific recommendations.The sulfate may be brushed up and treated as normal refuse. Soluble barium salts should be scooped up and treated as for waste disposal. Wash the spill area thoroughly with water.Environmental considerations - land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. /SRP: If time permits, pits, ponds, lagoons, soak holes, or holding areas should be sealed with an impermeable flexible membrane liner./ Cover solids with a plastic sheet to prevent dissolving in rain or fire fighting water. Dike surface flow using soil, sand bags, foamed polyurethane, or foamed concrete. Absorb bulk liquid with fly ash, cement powder, or commercial sorbents. /Barium/Environmental considerations - water spill: Use natural barriers or oil spill control booms to limit spill travel. Use natural deep water pockets, excavated lagoons, or sand bag barriers to trap material at bottom. Remove trapped material with suction hoses. /Barium/Environmental considerations - air spill: Apply water spray or mist to knock down vapors. /Barium/
Freisetung ohne BrandExcerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:
EntsorgungsverfahrenGenerators of waste (equal to or greater than 100 kg/mo) containing this contaminant, EPA hazardous waste number D005, must conform with USEPA regulations in storage, transportation, treatment and disposal of waste.Barite (barium sulfate) may be recovered from drilling muds for re-use as an alternative to disposal.... Ion exchange, lime softening and reverse osmosis are effective to remove barium from drinking water. Conventional coagulation/filtration processes are not effective to remove barium from drinking water. /Barium ion/Package lots. Place in a separate labeled container for recycling or disposal. Small quantities. Wear nitrile rubber gloves, laboratory coat, and eye protection. Avoid breathing dust. Dissolve the barium salt in the minimum volume of water. For each gram of barium salt, add 15 mL of 10% sodium sulfate solution. Let stand for 1 week. Test for completeness of precipitation by adding a few drops of 10% sodium sulfate solution. If required, add more sodium sulfate solution until no further precipitation occurs. Decant supernatant liquid or filter solid. Treat solid as normal refuse. Wash liquid into drain. /Barium salt/
Verschüttetes entsorgenPersonal 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.
Preventive MeasuresWear protective gloves and clothing to prevent any possibility of skin contact ... Wear dust-proof chemical goggles and face shield unless full facepiece respiratory protection is worn.... Efforts should ... be made to reduce atmospheric concentration of barite dust to a minimum. /Barite dust/SRP: Contaminated protective clothing should be segregated in such a manner so that there is no direct personal contact by personnel who handle, dispose, or clean the clothing. Quality assurance to ascertain the completeness of the cleaning procedures should be implemented before the decontaminated protective clothing is returned for reuse by the workers. Contaminated clothing should not be taken home at end of shift, but should remain at employee's place of work for cleaning.SRP: Wastewater from contaminant suppression, cleaning of protective clothing/equipment, or contaminated sites should be contained and evaluated for subject chemical or decomposition product concentrations. Concentrations shall be lower than applicable environmental discharge or disposal criteria. Alternatively, pretreatment and/or discharge to a permitted wastewater treatment facility is acceptable only after review by the governing authority and assurance that "pass through" violations will not occur. Due consideration shall be given to remediation worker exposure (inhalation, dermal and ingestion) as well as fate during treatment, transfer and disposal. If it is not practicable to manage the chemical in this fashion, it must be evaluated in accordance with EPA 40 CFR Part 261, specifically Subpart B, in order to determine the appropriate local, state and federal requirements for disposal.For more Preventive Measures (Complete) data for Barium sulfate (8 total), please visit the HSDB record page.
Isolation and EvacuationExcerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:
TreatmentIntravenous infusion of potassium often relieves many of the symptoms of barium toxicity. (L214)
ZielorganeEyes, respiratory system
Gesundheitliche AuswirkungenThe health effects of the different barium compounds depend on how well the compound dissolves in water or the stomach contents. At low doses, barium acts as a muscle stimulant, while higher doses affect the nervous system, causing cardiac irregularities, tremors, weakness, anxiety, dyspnea, paralysisand possibly death. Barium may also cause gastrointestinal disturbances, damage the kidneys and cause decreases in body weight. (L214)
ÖkotoxizitätswerteEC50Species: Daphnia magna (Water Flea)Conditions: freshwater, static, 11.5-14.5 °C, pH 7.2-7.8, dissolved oxygen 5.2-6.5 mg/LConcentration: 52820 ug/L (43200-68140 ug/L) for 24 hrEffect: intoxicaiton, immobilizationConcentration: 32000 ug/L for 48 hr
ExpositionspfadeThe substance can be absorbed into the body by inhalation of its aerosol.inhalation, skin and/or eye contactOral (L214)inhalation (L214)
ToxizitätsübersichtThe CIR Expert Panel concluded that barium sulfate is safe in the present practices of use and concentration in cosmetics, when formulated to be non-irritating.Safe for use in cosmetics, with qualificationsIDENTIFICATION: In nature barium occurs in a combined state, the principal forms being barite (barium sulfate) and witherite (barium carbonate). Barium sulfate has a very low water solubility. Barite ore is the raw material from which nearly all other barium compounds are derived. Barium and its compounds are used in diverse industrial products ranging from ceramics to lubricants. It is used in the manufacture of alloys, as a loader for paper, soap, rubber and linoleum, in the manufacture of valves and as an extinguisher for radium, uranium and plutonium fires. Anthropogenic sources of barium are primarily industrial. Emissions may result from mining, refining or processing barium minerals and the manufacture of barium products. Mining and processing of barite ore releases particulates into the air and from fugitive dusts from the use of barite in oil drilling and oil related industries. HUMAN EXPOSURE: It is difficult to assess the uptake of ingested barium because of a number of factors affect absorption. The presence of sulfate in food results in the precipitation of barium sulfate. ANIMAL/PLANT STUDIES: Insoluble barium compounds such as barium sulfate, accumulate in the lungs and are cleared slowly ciliary action.Barium is a competitive potassium channel antagonist that blocks the passive efflux of intracellular potassium, resulting in a shift of potassium from extracellular to intracellular compartments. The intracellular translocation of potassium results in a decreased resting membrane potential, making the muscle fibers electrically unexcitable and causing paralysis. Some of these barium's effects may also be due to barium induced neuromuscular blockade and membrane depolarization. (L214)
Ökotoxizitätsauszüge/AQUATIC SPECIES/ Barite affected the composition of estuarine communities developed from planktonic larvae in aquaria containing sand and flowing estuarine water. A significant number of annelids & mollusks decreasedhowever, clam growth, laevicardium mortoni, was not affected. Large amt of barium sulfate could adversely affect colonization of benthic animals. /Barite/
Signs and Symptomsirritation eyes, nose, upper respiratory systembenign pneumoconiosis (baritosis)Ingesting excess barium may cause vomiting, abdominal cramps, diarrhea, difficulties in breathing, increased or decreased blood pressure, numbness around the face, and muscle weakness. High levels may result in changes in heart rhythm or paralysis and possibly death. (L214)
Medical SurveillancePersons manifesting resp disorders should be /protected from exposure/.Workers who are to be exposed to the inhalation of barite dust should be subject to a preemployment exam.
Natural Pollution SourcesLarge deposits of barite are found in China, Germany, India, Morocco, and in the U.S.Occurs in nature as the mineral baritealso as barytes, heavy spar.Barium is a naturally occurring element found in the earth's crust(1) that enters the environment through the weathering of rocks and minerals(SRC). The principal barium minerals are barite (barium sulfate) and witherite (barium carbonate)(1).Barite, natural barium sulfate, occurs in the USA in Alaska, Arkansas ... Georgia, Missouri, Nevada, and Tennessee ... and was produced at 38 mines in the seven states in 1973, with Nevada supplying 50% of the tonnage. Missouri ranked second.Most commercial sources of barite are replacement deposits in limestone, dolomitic sandstone and shales, or residual deposits caused by differential weathering that result in lumps of barite enclosed in clay. Barite sometimes occurs in veins and as a gangue mineral in metallic ores, such as lead, zinc, and silver, and is frequently associated with fluorspar. /Barite/
Human Toxicity Excerpts/HUMAN EXPOSURE STUDIES/ Following a successful claim for damages by a speech pathologist, who was diagnosed with thyroid cancer after a period of employment including involvement in modified barium swallow procedures, a detailed study on occupational dose was commissioned. In this study radiation doses were measured routinely over 8 clinical periods using TLD100H dosimeters for staff involved with modified barium swallow radiological studies at three hospitals. The regions monitored included the unshielded thyroid, waist under apron, and axilla. Average unshielded thyroid doses for the speech pathologists were measured as 0.017, 0.003, and nil mGy per procedure over the hospitals surveyed, with dose measurements also found for the unshielded thyroid of the radiologist and nurse. This compares to thyroid doses of 0.200 and 0.055 mGy per procedure typically for cardiologists and orthopedic surgeons involved in radiological work, respectively. The use of a thyroid collar will substantially reduce this dose by a factor of about 40. While the worst-case doses are very small, attention should be given to education for staff involved in radiological procedures as well as ensuring that sound procedure protocols are in place and used./SIGNS AND SYMPTOMS/ Short Term Exposure: Irritates eyes and respiratory tract. Exposure to either form can affect the nervous system and cause hypokalemia, which can cause heart disorders. Long Term Exposure: Lungs may be affected by repeated or prolonged exposure to dust particles, resulting in baritosis (a form of benign pneumoconiosis). Animal studies have found increased blood pressure and changes in the heart from ingesting barium over a long time./SIGNS AND SYMPTOMS/ Inhalation of barium sulfate dust causes a benign pneumoconiosis ("baritosis") with conspicuous radiographic manifestations but no impairment of pulmonary function./SIGNS AND SYMPTOMS/ Several case reports and a prospective study ... have reported baritosis in barium exposed workers. Baritosis is considered a benign pneumoconiosis resulting from the inhalation of barite ore or barium sulfate. The most outstanding feature of baritosis is the intense radiopacity of the discrete opacities that are usually profusely disseminated throughout the lung fieldsin some cases the opacities may be so numerous that they appear confluent. The Third Conference of Experts on Pneumoconiosis ... noted that barium sulfate produced a noncollagenous type of pneumoconiosis in which there is a minimal stromal reaction that consists mainly of reticulin fibers, intact alveolar architecture, and potentially reversible lesions. The available human data on baritosis suggest that the accumulation of barium in the lungs does not result in medical disability or symptomatology. /Barite ore/For more Human Toxicity Excerpts (Complete) data for Barium sulfate (19 total), please visit the HSDB record page.
Artificial Pollution SourcesThe exhaust solids emitted from diesel engines which use barium based smoke depressant additives contain ... barium sulfate.
CERCLA-MeldepflichtmengenPersons in charge of vessels or facilities are required to notify the National Response Center (NRC) immediately, when there is a release of this designated hazardous substance, in an amount equal to or greater than its reportable quantity of 1000 lb or 454 kg. The toll free number of the NRC is (800) 424-8802. The rule for determining when notification is required is stated in 40 CFR 302.4 (section IV. D.3.b). /Barium/
State Drinking Water Standards(CA) CALIFORNIA 1000 ug/L /Barium/
Landesrichtlinien für Trinkwasser(AZ) ARIZONA 1500 ug/L /Barium/(ME) MAINE 1500 ug/L /Barium/(MN) MINNESOTA 2000 ug/L /Barium/
Federal Drinking Water StandardsMaximum Contaminant Level: 2 mg/L /Barium/Maximum Contaminant Level Goal: 2 mg/L /Barium/EPA 2000 ug/L /Barium/
Bundesrichtlinien für TrinkwasserEPA 2000 ug/L /Barium/