International Chemical Safety Cards

DISODIUM ARSENATE ICSC: 0326
DISODIUM ARSENATE
Arsenic acid, disodium salt, heptahydrate
Sodium arsenate heptahydrate
Sodium arsenate, dibasic, heptahydrate
Na2HAsO4.7H2O
Molecular mass: 312.0
CAS # 10048-95-0
RTECS # CG0900000
ICSC # 0326
UN # 1685
EC # 033-005-00-1
TYPES OF
HAZARD/
EXPOSURE
ACUTE HAZARDS/
SYMPTOMS
PREVENTION FIRST AID/
FIRE FIGHTING
FIRE Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.

In case of fire in the surroundings: all extinguishing agents allowed.
EXPLOSION Risk of fire and explosion on contact with some metals (see Chemical Dangers).


EXPOSURE
PREVENT DISPERSION OF DUST! AVOID ALL CONTACT!
IN ALL CASES CONSULT A DOCTOR!
  • INHALATION
  • Cough. Headache. Sore throat (see Ingestion).
    Closed system and ventilation.
    Fresh air, rest. Refer for medical attention.
  • SKIN
  • Redness. Pain.
    Protective gloves. Protective clothing.
    Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention.
  • EYES
  • Redness. Pain.
    Face shield, or eye protection in combination with breathing protection if powder.
    First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
  • INGESTION
  • Abdominal pain. Burning sensation. Diarrhoea. Vomiting.
    Do not eat, drink, or smoke during work. Wash hands before eating.
    Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention.
    SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
    Do NOT wash away into sewer. Vacuum spilled material. Carefully collect remainder, then remove to safe place (extra personal protection: P3 filter respirator for toxic particles).
    Separated from acids, oxidants, reactive metals, food and feedstuffs. Dry.
    Unbreakable packaging; put breakable packaging into closed unbreakable container. Do not transport with food and feedstuffs.
    T symbol
    R: 45-23/25
    S: 53-45
    Note: A; Note: E
    UN Hazard Class: 6.1
    UN Packing Group: II
    Marine pollutant.
    SEE IMPORTANT INFORMATION ON BACK
    ICSC: 0326 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

    International Chemical Safety Cards

    DISODIUM ARSENATE ICSC: 0326

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    PHYSICAL STATE; APPEARANCE:
    ODOURLESS, COLOURLESS CRYSTALS.

    PHYSICAL DANGERS:


    CHEMICAL DANGERS:
    The substance decomposes on heating producing toxic fumes including arsenic, arsenic oxides. Reacts violently with strong oxidants, strong acids and metals such as iron, aluminium and zinc causing explosion and toxic hazard.

    OCCUPATIONAL EXPOSURE LIMITS (OELs):
    TLV (as As): ppm; 0.01 mg/m3 (ACGIH 1993-1994).


    ROUTES OF EXPOSURE:
    The substance can be absorbed into the body by inhalation of its aerosol and by ingestion.

    INHALATION RISK:
    A harmful contamination of the air will be reached rather slowly on evaporation of this substance at 20C; on spraying or dispersing, however, much faster.

    EFFECTS OF SHORT-TERM EXPOSURE:
    The substance irritates the eyes, the skin and the respiratory tract. The substance may cause effects on the cardiovascular system, gastrointestinal tract, central nervous system , resulting in severe haemorrhagic, losses of fluid and electrolytes, collapse, shock and death. Exposure may result in death. The effects may be delayed. Medical observation is indicated.

    EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
    Repeated or prolonged contact with skin may cause dermatitis. Repeated or prolonged contact may cause skin sensitization. The substance may have effects on the mucous membranes, skin, liver, kidneys and peripheral nervous system , resulting in neuropathy, pigmentation disorders, perforation of nasal septum and tissue lesions. This substance is probably carcinogenic to humans.
    PHYSICAL
    PROPERTIES
    Boiling point (decomposes): 180C
    Melting point: 130C
    Relative density (water = 1): 1.9
    Solubility in water, g/100 ml at 0C: 5.46
    ENVIRONMENTAL
    DATA
    This substance may be hazardous to the environment; special attention should be given to water, soil and organisms. It is strongly advised not to let the chemical enter into the environment because it persists in the environment.
    N O T E S
    ACGIH classified this chemical as A1 (confirmed human carcinogen). The apparent melting point caused by loss of crystal water is given. Do NOT take working clothes home.
    Transport Emergency Card: TEC (R)-61G11b
    ADDITIONAL INFORMATION


    ICSC: 0326 DISODIUM ARSENATE
    © IPCS, CEC, 1993
    IMPORTANT LEGAL NOTICE: Neither the CEC or the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use.