What is the chemical formula for aluminium arsenide

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• Formula: AlAs
• Hill system formula: Al1As1
• CAS registry number: [22831-42-1]
• Formula weight: 101.903
• Class: arsenide
• Colour: orange
• Appearance: crystalline solid
• Melting point: 1740°C
• Boiling point:
• Density: 3760 kg m-3

The following are some synonyms of aluminium arsenide:

• aluminium arsenide
• aluminium(III) arsenide
• aluminum arsenide
• aluminum(III) arsenide

The oxidation number of aluminium in aluminium arsenide is 3.

Synthesis

As/H2 + Al (1100oC) → AlAs Al + As (600oC) → AlAs

• Geometry of aluminium: 4 coordinate: tetrahedral
• Prototypical structure: ZnS (sphalerite, zinc blende)

Element analysis

The table shows element percentages for AlAs (aluminium arsenide).

Isotope pattern for AlAs

The chart below shows the calculated isotope pattern for the formula AlAs with the most intense ion set to 100%.

The data on these compounds pages are assembled and adapted from the primary literature and several other sources including the following.

• R.T. Sanderson in Chemical Periodicity, Reinhold, New York, USA, 1960.
• N.N. Greenwood and A. Earnshaw in Chemistry of the Elements, 2nd edition, Butterworth, UK, 1997.
• F.A. Cotton, G. Wilkinson, C.A. Murillo, and M. Bochmann, in Advanced Inorganic Chemistry, John Wiley & Sons, 1999.
• A.F. Trotman-Dickenson, (ed.) in Comprehensive Inorganic Chemistry, Pergamon, Oxford, UK, 1973.
• R.W.G. Wyckoff, in Crystal Structures, volume 1, Interscience, John Wiley & Sons, 1963.
• A.R.West in Basic solid state chemistry Chemistry, John Wiley & Sons, 1999.
• A.F. Wells in Structural inorganic chemistry, 4th edition, Oxford, UK, 1975.
• J.D.H. Donnay, (ed.) in Crystal data determinative tables, ACA monograph number 5, American Crystallographic Association, USA, 1963.
• D.R. Lide, (ed.) in Chemical Rubber Company handbook of chemistry and physics, CRC Press, Boca Raton, Florida, USA, 77th edition, 1996.
• J.W. Mellor in A comprehensive treatise on inorganic and theoretical chemistry, volumes 1-16, Longmans, London, UK, 1922-1937.
• J.E. Macintyre (ed.) in Dictionary of inorganic compounds, volumes 1-3, Chapman & Hall, London, UK, 1992.

Product Name: Aluminum Arsenide

Product Number: All applicable American Elements product codes, e.g. AL-AS-02 , AL-AS-025 , AL-AS-03 , AL-AS-035 , AL-AS-04 , AL-AS-05

CAS #: 22831-42-1

Relevant identified uses of the substance: Scientific research and development

Supplier details:American Elements10884 Weyburn Ave.Los Angeles, CA 90024Tel: +1 310-208-0551

Fax: +1 310-208-0351

Emergency telephone number:Domestic, North America: +1 800-424-9300

International: +1 703-527-3887

SECTION 2. HAZARDS IDENTIFICATION

Classification of the substance or mixtureClassification according to Regulation (EC) No 1272/2008GHS06 Skull and crossbonesAcute Tox. 3 H301 Toxic if swallowed.Acute Tox. 3 H331 Toxic if inhaled.Hazards not otherwise classifiedNo data availableLabel elementsLabelling according to Regulation (EC) No 1272/2008The substance is classified and labeled according to the CLP regulation.

Hazard pictograms

GHS06Signal wordDangerHazard statementsH301+H331 Toxic if swallowed or if inhaled.Precautionary statementsP261 Avoid breathing dust/fume/gas/mist/vapors/spray.P304+P340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.P321 Specific treatment (see on this label).P405 Store locked up.P403+P233 Store in a well-ventilated place. Keep container tightly closed.P501 Dispose of contents/container in accordance with local/regional/national/international regulations.WHMIS classificationD1A - Very toxic material causing immediate and serious toxic effectsD2A - Very toxic material causing other toxic effectsClassification systemHMIS ratings (scale 0-4)(Hazardous Materials Identification System) HEALTH FIRE REACTIVITY311Health (acute effects) = 3Flammability = 1Physical Hazard = 1Other hazardsResults of PBT and vPvB assessmentPBT:N/AvPvB:

N/A

SECTION 3. COMPOSITION/INFORMATION ON INGREDIENTS

SubstancesCAS No. / Substance Name:22831-42-1 Aluminum arsenideIdentification number(s):Index number:

033-002-00-5

SECTION 4. FIRST AID MEASURES

Description of first aid measuresGeneral informationImmediately remove any clothing soiled by the product.Remove breathing apparatus only after contaminated clothing has been completely removed.In case of irregular breathing or respiratory arrest provide artificial respiration.If inhaled:Supply patient with fresh air. If not breathing, provide artificial respiration. Keep patient warm.Seek immediate medical advice.In case of skin contact:Immediately wash with soap and water; rinse thoroughly.Seek immediate medical advice.In case of eye contact:Rinse opened eye for several minutes under running water. Consult a physician.If swallowed:Do not induce vomiting; immediately call for medical help.Information for doctorMost important symptoms and effects, both acute and delayedNo data availableIndication of any immediate medical attention and special treatment needed

No data available

SECTION 5. FIREFIGHTING MEASURES

Extinguishing mediaSuitable extinguishing agentsCO2, sand, extinguishing powder. Do not use water.Special hazards arising from the substance or mixtureIf this product is involved in a fire, the following can be released:Toxic metal oxide fumeArsineAdvice for firefightersProtective equipment:Wear self-contained respirator.

Wear fully protective impervious suit.

SECTION 6. ACCIDENTAL RELEASE MEASURES

Personal precautions, protective equipment and emergency proceduresUse personal protective equipment. Keep unprotected persons away.Ensure adequate ventilationEnvironmental precautions:Do not allow material to be released to the environment without official permits.Methods and materials for containment and cleanup:Dispose of contaminated material as waste according to section 13.Ensure adequate ventilation.Prevention of secondary hazards:No special measures required.Reference to other sectionsSee Section 7 for information on safe handlingSee Section 8 for information on personal protection equipment.

See Section 13 for disposal information.

SECTION 7. HANDLING AND STORAGE

HandlingPrecautions for safe handlingKeep container tightly sealed.Store in cool, dry place in tightly closed containers.Ensure good ventilation at the workplace.Open and handle container with care.Information about protection against explosions and fires:No data availableConditions for safe storage, including any incompatibilitiesRequirements to be met by storerooms and receptacles:No special requirements.Information about storage in one common storage facility:No data availableFurther information about storage conditions:Keep container tightly sealed.Store in cool, dry conditions in well-sealed containers.Specific end use(s)

No data available

SECTION 8. EXPOSURE CONTROLS/PERSONAL PROTECTION

Additional information about design of technical systems:Properly operating chemical fume hood designed for hazardous chemicals and having an average face velocity of at least 100 feet per minute.Control parametersComponents with limit values that require monitoring at the workplace:Arsenic, elemental, and inorganic compounds (except arsine), as As mg/m3ACGIH TLV 0.01; Confirmed human carcinogenBelgium TWA 0.2Denmark TWA 0.05Finland TWA CarcinogenFrance VME 0.2Hungary 0.5-STEL; CarcinogenKorea TWA 0.01; Confirmed human carcinogenNorway 0.02Poland TWA 0.01Sweden NGV 0.03; CarcinogenSwitzerland TWA 0.1; CarcinogenUnited Kingdom TWA 0.1; CarcinogenUSA PEL 0.01Additional information:No dataExposure controlsPersonal protective equipmentFollow typical protective and hygienic practices for handling chemicals.Keep away from foodstuffs, beverages and feed.Remove all soiled and contaminated clothing immediately.Wash hands before breaks and at the end of work.Store protective clothing separately.Maintain an ergonomically appropriate working environment.Breathing equipment:Refer to 29CFR1910.1018 for regulations on respiratory protection required during exposure to inorganic arsenic.Use self-contained respiratory protective device in emergency situations.Protection of hands:Impervious glovesInspect gloves prior to use.Suitability of gloves should be determined both by material and quality, the latter of which may vary by manufacturer.Eye protection:Safety glassesBody protection:

Protective work clothing

SECTION 9. PHYSICAL AND CHEMICAL PROPERTIES

Information on basic physical and chemical propertiesAppearance:Form: Powder, pieces, or solid in various formsColor: GreyOdor: No data availableOdor threshold: No data available.pH: N/AMelting point/Melting range: 1740 °C (3164 °F)Boiling point/Boiling range: No data availableSublimation temperature / start: No data availableFlash point: N/AFlammability (solid, gas)No data available.Ignition temperature: No data availableDecomposition temperature: No data availableAutoignition: No data available.Danger of explosion:Product does not present an explosion hazard.Explosion limits:Lower: No data availableUpper: No data availableVapor pressure: N/A

Density at 20 °C (68 °F): 3.81 g/cm3 (31.794 lbs/gal)

Solubility in Water (H2O): Insoluble

No data available

SECTION 10. STABILITY AND REACTIVITY

ReactivityNo data availableChemical stabilityStable under recommended storage conditions.Thermal decomposition / conditions to be avoided:Decomposition will not occur if used and stored according to specifications.Possibility of hazardous reactionsNo dangerous reactions knownConditions to avoidNo data availableIncompatible materials:No data availableHazardous decomposition products:Toxic metal oxide fume

Arsine

SECTION 11. TOXICOLOGICAL INFORMATION

Information on toxicological effectsAcute toxicity:Toxic if inhaled.Toxic if swallowed.LD/LC50 values that are relevant for classification:No dataSkin irritation or corrosion:Irritant to skin and mucous membranes.Eye irritation or corrosion:Irritating effect.Sensitization:No sensitizing effects known.Germ cell mutagenicity:No effects known.Carcinogenicity:EPA-A: human carcinogen: sufficient evidence from epidemiologic studies to support a causal association between exposure and cancer.IARC-1: Carcinogenic to humans: sufficient evidence of carcinogenicity.ACGIH A1: Confirmed human carcinogen: Agent is carcinogenic to humans based on epidemiologic studies of, or convincing clinical evidence in, exposed humans.Carcinogen as defined by OSHA.NTP-K: Known to be carcinogenic: sufficient evidence from human studies.Reproductive toxicity:No effects known.Specific target organ system toxicity - repeated exposure:No effects known.Specific target organ system toxicity - single exposure:No effects known.Aspiration hazard:No effects known.Subacute to chronic toxicity:Acute arsenic poisoning from ingestion results in marked irritation of the stomach and intestines with nausea, vomiting and diarrhea. In severe cases, the vomitus and stools are bloody and the patient goes into collapse and shock with weak, rapid pulse, cold sweats, coma and death.Chronic arsenic poisoning may cause disturbances of the digestive system such as loss of appetite, cramps, nausea, constipation or diarrhea.Subacute to chronic toxicity:No effects known.Subacute to chronic toxicity:Aluminum may be implicated in Alzheimers disease. Inhalation of aluminum containing dusts may cause pulmonary disease.Additional toxicological information:To the best of our knowledge the acute and chronic toxicity of this substance is not fully known.Carcinogenic categoriesOSHA-Ca (Occupational Safety & Health Administration)

Substance is not listed

SECTION 12. ECOLOGICAL INFORMATION

ToxicityAquatic toxicity:No data availablePersistence and degradabilityNo data availableBioaccumulative potentialNo data availableMobility in soilNo data availableEcotoxical effects:Remark:Very toxic for aquatic organismsAdditional ecological information:Do not allow material to be released to the environment without official permits.Do not allow product to reach groundwater, water courses, or sewage systems, even in small quantities.Danger to drinking water if even extremely small quantities leak into the ground.Also poisonous for fish and plankton in water bodies.May cause long lasting harmful effects to aquatic life.Avoid transfer into the environment.Very toxic for aquatic organismsResults of PBT and vPvB assessmentPBT:N/AvPvB:N/AOther adverse effects

No data available

SECTION 13. DISPOSAL CONSIDERATIONS

Waste treatment methodsRecommendationConsult official regulations to ensure proper disposal.Uncleaned packagings:Recommendation:

Disposal must be made according to official regulations.

SECTION 14. TRANSPORT INFORMATION

UN-NumberDOT, IMDG, IATAUN1557UN proper shipping nameDOTArsenic compounds, solid, n.o.s. (Aluminum arsenide)IMDG, IATAARSENIC COMPOUND, SOLID, N.O.S. (Aluminum arsenide)Transport hazard class(es)DOTClass6.1 Toxic substances.Label6.1Class6.1 (T5) Toxic substancesLabel6.1IMDG, IATAClass6.1 Toxic substances.Label6.1Packing groupDOT, IMDG, IATAIIEnvironmental hazards:Environmentally hazardous substance, solidSpecial precautions for userWarning: Toxic substancesTransport in bulk according to Annex II of MARPOL73/78 and the IBC CodeN/ATransport/Additional information:DOTMarine Pollutant (DOT):NoUN "Model Regulation":

UN1557, Arsenic compounds, solid, n.o.s. (Aluminum arsenide), 6.1, II

SECTION 15. REGULATORY INFORMATION

Safety, health and environmental regulations/legislation specific for the substance or mixtureNational regulationsAll components of this product are listed in the U.S. Environmental Protection Agency Toxic Substances Control Act Chemical substance Inventory.All components of this product are listed on the Canadian Non-Domestic Substances List (NDSL).SARA Section 313 (specific toxic chemical listings)22831-42-1 Aluminum arsenideCalifornia Proposition 65Prop 65 - Chemicals known to cause cancer22831-42-1 Aluminum arsenideProp 65 - Developmental toxicitySubstance is not listed.Prop 65 - Developmental toxicity, femaleSubstance is not listed.Prop 65 - Developmental toxicity, maleSubstance is not listed.Information about limitation of use:For use only by technically qualified individuals.This product contains arsenicand is subject to the reporting requirements of section 313 of the Emergency Planning and Community Right to Know Act of 1986 and 40CFR372.Other regulations, limitations and prohibitive regulationsRefer to 29CFR1910.1018 for regulations concerning inorganic arsenic.Substance of Very High Concern (SVHC) according to the REACH Regulations (EC) No. 1907/2006.Substance is not listed.The conditions of restrictions according to Article 67 and Annex XVII of the Regulation (EC) No 1907/2006 (REACH) for the manufacturing, placing on the market and use must be observed.Substance is not listed.Annex XIV of the REACH Regulations (requiring Authorisation for use)Substance is not listed.Chemical safety assessment:

A Chemical Safety Assessment has not been carried out

SECTION 16. OTHER INFORMATION

Safety Data Sheet according to Regulation (EC) No. 1907/2006 (REACH). The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. The information in this document is based on the present state of our knowledge and is applicable to the product with regard to appropriate safety precautions. It does not represent any guarantee of the properties of the product. American Elements shall not be held liable for any damage resulting from handling or from contact with the above product. See reverse side of invoice or packing slip for additional terms and conditions of sale. COPYRIGHT 1997-2022 AMERICAN ELEMENTS. LICENSED GRANTED TO MAKE UNLIMITED PAPER COPIES FOR INTERNAL USE ONLY.