Material Safety Data Sheet

acc. to OSHA and ANSI
  Printing date 05/30/2000 Reviewed on 05/05/2000  
  •   1 Identification of substance:

    • Product details:

    • Trade name: Gallium arsenide

    • Stock number: 88458

    • Manufacturer/Supplier:

    • Alfa Aesar, A Johnson Matthey Company
      Johnson Matthey Catalog Company, Inc.
      30 Bond Street
      Ward Hill, MA 01835-8099
      Emergency Phone: (978) 521-6300
      CHEMTREC: (800) 424-9300
      Web Site:

    • Information department: Health, Safety and Environmental Department

    • Emergency information:

    • During normal hours the Health, Safety and Environmental Department. After normal hours call Chemtrec at (800) 424-9300.
  •   2 Composition/Data on components:

    • Chemical characterization:

    •            Description: (CAS#)                                        
                  Gallium arsenide (CAS# 1303-00-0), 100%
    • Identification number(s):

    • EINECS Number: 215-114-8

    • EU Number: 033-002-00-5
  •   3 Hazards identification

    • Hazard description: T Toxic

    • Information pertaining to particular dangers for man and environment

    • R 23/25 Toxic by inhalation and if swallowed.
  •   4 First aid measures

    • General information

    • Immediately 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.
    • After inhalation

    • Supply fresh air. If required, provide artificial respiration. Keep patient warm.
      Seek immediate medical advice.
    • After skin contact

    • Immediately wash with water and soap and rinse thoroughly.
      Seek immediate medical advice.
    • After eye contact

    • Rinse opened eye for several minutes under running water. Then consult a doctor.
    • After swallowing

    • Do not induce vomiting; immediately call for medical help.
      Seek immediate medical advice.
  •   5 Fire fighting measures

    • Suitable extinguishing agents

    • CO2, sand, extinguishing powder. Do not use water.
    • For safety reasons unsuitable extinguishing agents Water

    • Special hazards caused by the material, its products of combustion or

    •   resulting gases:
      In case of fire, the following can be released:
      Toxic metal oxide fume
    • Protective equipment:

    • Wear self-contained respirator.
      Wear fully protective impervious suit.
  •   6 Accidental release measures

    • Person-related safety precautions:

    • Wear protective equipment. Keep unprotected persons away.
      Ensure adequate ventilation
    • Measures for environmental protection:

    • Do not allow material to be released to the environment without proper governmental permits.
    • Measures for cleaning/collecting:

    • Dispose contaminated material as waste according to item 13.
      Ensure adequate ventilation.
    • Additional information:

    • See Section 7 for information on safe handling
      See Section 8 for information on personal protection equipment.
      See Section 13 for disposal information.
  •   7 Handling and storage

    • Handling

    • Information for safe handling:

    • Handle under dry protective gas.
      Keep 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 special measures required.

    • Storage

    • Requirements to be met by storerooms and receptacles:

    • No special requirements.
    • Information about storage in one common storage facility:

    • Do not store together with acids.
      Store away from water/moisture.
    • Further information about storage conditions:

    • Store under dry inert gas.
      Protect from humidity and water.
      Keep container tightly sealed.
      Store in cool, dry conditions in well sealed containers.
      Store under lock and key and with access restricted to technical experts or their assistants only.
  •   8 Exposure controls and 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.

      Components with limit values that require monitoring at the workplace:

      Arsenic, elemental, and inorganic compounds (except arsine), as As
      ACGIH TLV             0.01, A1
      Belgium TWA           0.2
      Denmark TWA           0.05
      Finland TWA           carcinogen
      France TWA            0.2
      Hungary TWA           0.5; carcinogen
      Ireland TWA           0.1; carcinogen
      Netherlands TWA       0.025; 0.05-STEL (water-soluble inorganic cmpds)
      Poland TWA            0.3
      Sweden TWA            0.03; carcinogen
      Switzerland TWA       0.1; carcinogen
      United Kingdom TWA    0.1
      USA PEL (respirable)  0.01
    • Additional information: No data

    • Personal protective equipment

    • General protective and hygienic measures

    • The usual precautionary measures for handling chemicals should be followed.
      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.
    • Breathing equipment:

    • Use suitable respirator when high concentrations are present.
      Refer to 29CFR1910.1018 for regulations on respiratory protection required during exposure to inorganic arsenic.
    • Protection of hands: Impervious gloves

    • Eye protection: Safety glasses

    • Body protection: Protective work clothing.
  •   9 Physical and chemical properties:

    • Form: Chunks

    • Color: Dark grey

    • Odor: Odorless

    •                                      Value/Range  Unit    Method      

    • Change in condition

    • Melting point/Melting range:                  1238 ° C

    • Boiling point/Boiling range:       Not determined

    • Sublimation temperature / start:   Not determined

    • Flash point:                       Not applicable

    • Ignition temperature:              Not determined

    • Decomposition temperature:         Not determined

    • Danger of explosion:

    • Product does not present an explosion hazard.

    • Explosion limits:

    • Lower:                             Not determined

    • Upper:                             Not determined

    • Vapor pressure:                    Not determined

    • Density:               at   20 ° C            5.31 g/cm3

    • Solubility in / Miscibility with

    • Water:                             Reacts

    • Insoluble
  •  10 Stability and reactivity

    • Thermal decomposition / conditions to be avoided:

    • Decomposition will not occur if used and stored according to specifications.
    • Materials to be avoided:

    • Acids
    • Dangerous reactions Contact with acids releases toxic gases

    • Dangerous products of decomposition: Arsenic compounds
  •  11 Toxicological information

    • Acute toxicity:

    • Primary irritant effect:

    • on the skin: Irritant to skin and mucous membranes.

    • on the eye: Irritating effect.

    • Sensitization: No sensitizing 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.
      Gallium and gallium compounds may cause metallic taste, dermatitis and depression of the bone marrow function.  Large doses may cause hemorrhagic nephritis.
    • Additional toxicological information:

    • To the best of our knowledge the acute and chronic toxicity of this substance is not fully known.
      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.
      NTP-1: Known to be carcinogenic: sufficient evidence from human studies.
      Carcinogen as defined by OSHA.
      ACGIH A1: Confirmed human carcinogen: Agent is carcinogenic to humans based on epidemiologic studies of, or convincing clinical evidence in, exposed humans.
  •  12 Ecological information:

    • General notes:

    • Do not allow material to be released to the environment without proper governmental permits.
  •  13 Disposal considerations

    • Product:

    • Recommendation

    • Consult state, local or national regulations for proper disposal.

    • Uncleaned packagings:

    • Recommendation:

    • Disposal must be made according to official regulations.
  •  14 Transport information

    • DOT regulations:

    • Hazard class:             6.1

    • Identification number:    UN1557

    • Packing group:            II

    • Proper shipping name (technical name):

    •                           Arsenic compound, solid, n.o.s., gallium                           arsenide

    • Land transport ADR/RID  (cross-border)

    • ADR/RID class:            6.1 Toxic substances

    • Item:                     51b

    • Danger code (Kemler):     60

    • UN-Number:                1557

    • Description of goods:     Arsenic compound, solid, n.o.s., gallium

    •                           arsenide

    • Maritime transport IMDG:

    • IMDG Class:               6.1

    • UN Number:                1557

    • Packaging group:          II

    • Proper shipping name:     Arsenic compound, solid, n.o.s., gallium

    •                           arsenide

    • Air transport ICAO-TI and IATA-DGR:

    • ICAO/IATA Class:          6.1

    • UN/ID Number:             1557

    • Packaging group:          II

    • Proper shipping name:     Arsenic compound, solid, n.o.s., gallium

    •                           arsenide
  •  15 Regulations

    • Product related hazard informations:

    • Hazard symbols: T Toxic

    • Risk phrases: 23/25 Toxic by inhalation and if swallowed.

    • Safety phrases:

    • 20/21 When using do not eat, drink or smoke.
      28    After contact with skin, wash immediately with plenty of water
      45    In case of accident or if you feel unwell, seek medical advice immediately.

    • National regulations

    • All components of this product are listed in the U.S. Environmental Protection Agency Toxic Substances Control Act Chemical Substance Inventory.
      This product contains a chemical known to the state of California to cause cancer or reproductive toxicity.

    • Information about limitation of use:

    • For use only by technically qualified individuals.
      This product contains arsenic and 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 regulations

    • Refer to 29CFR1910.1018 for regulations concerning inorganic arsenic.
  •  16 Other information:

    • Employers should use this information only as a supplement to other information gathered by them, and should make independent judgement of suitability of this information to ensure proper use and protect the health and safety of employees.  This information is furnished without warranty, and any use of the product not in conformance with this Material Safety Data Sheet, or in combination with any other product or process, is the responsibility of the user.

    • Department issuing MSDS: Health, Safety and Environmental Department.

    • Contact: Darrell R. Sanders