DISODIUM ARSENATE HEPTAHYDRATE 0326
October 2005
CAS No: 10048-95-0 Arsenic acid, disodium salt, heptahydrate
RTECS No: CG0900000 Sodium arsenate heptahydrate
UN No: 1685 Sodium arsenate, dibasic, heptahydrate
EC No: 033-005-00-1 Na2HAsO4. 7H2O
Molecular mass: 312.0
TYPES OF
ACUTE HAZARDS/SYMPTOMS PREVENTION FIRST AID/FIRE FIGHTING
HAZARD/
EXPOSURE
FIRE Not combustible. Gives off irritating or In case of fire in the surroundings: use
toxic fumes (or gases) in a fire. appropriate extinguishing media.
EXPLOSION Risk of fire and explosion on contact
with some metals, see Chemical
Dangers.
EXPOSURE PREVENT DISPERSION OF DUST! IN ALL CASES CONSULT A DOCTOR!
AVOID ALL CONTACT! AVOID
EXPOSURE OF (PREGNANT) WOMEN!
Inhalation Cough. Headache. Sore throat Closed system and ventilation. Fresh air, rest. Refer for medical
Weakness. Further see Ingestion. attention.
Skin Redness. Pain. Protective gloves. Protective clothing. Remove contaminated clothes. Rinse and
then wash skin with water and soap.
Eyes Redness. Pain. Face shield or eye protection in First rinse with plenty of water for several
combination with breathing protection if minutes (remove contact lenses if easily
powder. possible), then take to a doctor.
Ingestion Abdominal pain. Burning sensation. Do not eat, drink, or smoke during work. Rinse mouth. Give a slurry of activated
Diarrhoea. Vomiting. Shock or collapse. Wash hands before eating. charcoal in water to drink. Refer for
medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Chemical protection suit including self-contained breathing EU classification Unbreakable packaging; put breakable
apparatus. Do NOT let this chemical enter the environment. T Symbol packaging into closed unbreakable
Sweep spilled substance into containers; if appropriate, N Symbol container. Do not transport with food and
moisten first to prevent dusting. Carefully collect remainder, R: 45-23/25-50/53 feedstuffs. Marine pollutant.
then remove to safe place. S: 53-45-60-61
Note: A; E
UN classification
UN Hazard Class: 6.1
UN Pack Group: II
EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-61GT5-II Store in an area without drain or sewer access. Well closed. Separated from acids,
food and feedstuffs.
Prepared in the context of cooperation between the International
IPCS Programme on Chemical Safety and the European Commission 漏
IPCS 2006
International
Programme on
SEE IMPORTANT INFORMATION ON THE BACK.
Chemical Safety
0326 DISODIUM ARSENATE HEPTAHYDRATE
IMPORTANT DATA
Physical State; Appearance Routes of exposure
COLOURLESS CRYSTALS The substance can be absorbed into the body by inhalation of its aerosol
and by ingestion.
Chemical dangers
Upon heating, toxic fumes are formed. Reacts with acids to produce toxic Inhalation risk
arsine gas (see ICSC 0222). Attacks many metals in presence of water A harmful concentration of airborne particles can be reached quickly when
such as iron, aluminium and zinc, releasing toxic fumes of arsenic and dispersed.
arsine.
Effects of short-term exposure
Occupational exposure limits The substance is irritating to the eyes, the skin and the respiratory tract.
TLV: (as As) 0.01 mg/m3 as TWA; A1 (confirmed human carcinogen); BEI The substance may cause effects on the cardiovascular system, central
issued; (ACGIH 2005). nervous system, gastrointestinal tract, kidneys, resulting in cardiac
MAK: Carcinogen category: 1; Germ cell mutagen group: 3A; (DFG 2005). disorders, severe gastroenteritis, loss of fluids and electrolytes, kidney
impairment, collapse, shock. Exposure far above the OEL 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. The
substance may have effects on the peripheral nervous system, mucous
membranes, skin, cardiovascular system, bone marrow, kidneys and
liver, resulting in neuropathy, pigmentation disorders, perforation of nasal
septum, lesions of blood cells, kidney impairment and cirrhosis. This
substance is carcinogenic to humans. Animal tests show that this
substance possibly causes toxicity to human reproduction or
development.
PHYSICAL PROPERTIES
Density: 1.9 g/cm3
Boiling point (decomposes): 180/C
Melting point: 130/C Solubility in water, g/100 ml at 21/C: 39
ENVIRONMENTAL DATA
This substance may be hazardous to the environment; special attention should be given to ground water contamination, aquatic organisms and soil
organisms. This substance does enter the environment under normal use. Great care, however, should be given to avoid any additional release, e.g.
through inappropriate disposal.
NOTES
The apparent melting point caused by loss of crystal water is given.
Depending on the degree of exposure, periodic medical examination is suggested.
Do NOT take working clothes home.
Card has been partially updated in January 2008: see Ingestion First Aid.
ADDITIONAL INFORMATION
Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible
LEGAL NOTICE for the use which might be made of this information
漏IPCS 2006
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