SODIUM ARSENITE 1603
October 2005
CAS No: 7784-46-5 Arsenious acid, sodium salt
Sodium meta-arsenite
RTECS No: CG3675000
Sodium dioxoarsenate
UN No: 2027
NaAsO2
EC No: 033-002-00-5
Molecular mass: 129.9
TYPES OF
ACUTE HAZARDS/SYMPTOMS PREVENTION FIRST AID/FIRE FIGHTING
HAZARD/
EXPOSURE
FIRE Not combustible. Gives off irritating In case of fire in the surroundings:
or toxic fumes (or gases) in a fire. use appropriate extinguishing media.
EXPLOSION
EXPOSURE PREVENT DISPERSION OF DUST! IN ALL CASES CONSULT A
AVOID ALL CONTACT! AVOID DOCTOR!
EXPOSURE OF (PREGNANT)
WOMEN!
Inhalation Cough. Headache. Laboured Closed system and ventilation. Fresh air, rest. Refer for medical
breathing. Sore throat. See attention.
Ingestion.
Skin MAY BE ABSORBED! Redness. Protective gloves. Protective clothing. Remove contaminated clothes.
Pain. Rinse and then wash skin with water
and soap. Refer for medical
attention.
Eyes Redness. Pain. Face shield or eye protection in First rinse with plenty of water for
combination with breathing several minutes (remove contact
protection. lenses if easily possible), then take to
a doctor.
Ingestion Abdominal pain. Burning sensation Do not eat, drink, or smoke during Rinse mouth. Give a slurry of
in the throat and chest. Vomiting. work. Wash hands before eating. activated charcoal in water to drink.
Diarrhoea. Dizziness. Headache. Induce vomiting (ONLY IN
Shock or collapse. CONSCIOUS PERSONS!). Refer for
medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Personal protection: chemical protection suit including T Symbol Unbreakable packaging; put
self-contained breathing apparatus. Do NOT let this N Symbol breakable packaging into closed
chemical enter the environment. Vacuum spilled R: 23/25-50/53 unbreakable container. Do not
material with special equipment. Sweep spilled S: (1/2-)20/21-28-45-60-61 transport with food and feedstuffs.
substance into sealable plastic containers. Carefully Note: A, 1
collect remainder, then remove to safe place. 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. Dry. Separated
from acids, strong oxidants, food and feedstuffs.
Prepared in the context of cooperation between the International
IPCS Programme on Chemical Safety and the European Commission 漏
IPCS 2005
International
Programme on
SEE IMPORTANT INFORMATION ON THE BACK.
Chemical Safety
1603 SODIUM ARSENITE
IMPORTANT DATA
Physical State; Appearance Routes of exposure
WHITE OR GREY HYGROSCOPIC POWDER The substance can be absorbed into the body by inhalation of its
aerosol, through the skin and by ingestion.
Chemical dangers
Inhalation risk
Upon heating, toxic fumes are formed. Reacts with acids and
strong oxidants to produce toxic arsine gas (see ICSC 0222). A harmful concentration of airborne particles can be reached
Attacks many metals forming flammable/explosive gas (hydrogen quickly when dispersed.
- see ICSC 0001) and arsine.
Effects of short-term exposure
Occupational exposure limits The substance is irritating to the eyes the skin and the respiratory
TLV: (as As) 0.01 mg/m 3 as TWA; A1 (confirmed human tract. The substance may cause effects on the cardiovascular
carcinogen); BEI issued; (ACGIH 2005). system, nervous system, gastrointestinal tract and kidneys,
MAK: (arsenic and inorganic arsenic compounds); EKA, BLW resulting in severe gastroenteritis, loss of fluids and electrolytes,
issued; Carcinogen category: 1; Germ cell mutagen group: 3A; kidney impairment, cardiac disorders, collapse, shock. Exposure
(DFG 2005). 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,
pigmentation disorders. The substance may have effects on the
peripheral nervous system, cardiovascular system, bone marrow,
kidneys, liver and mucous membranes, resulting in neuropathy,
cardiovascular disorders, lesions of blood cells, kidney
impairment, cirrhosis and perforation of nasal septum. This
substance is carcinogenic to humans. Animal tests show that this
substance possibly causes toxicity to human reproduction or
development.
PHYSICAL PROPERTIES
Melting point: 615/C Solubility in water: very good
Density: 1.87 g/cm3
ENVIRONMENTAL DATA
The substance is toxic to aquatic organisms.
NOTES
Other UN number: 1686 Sodium Arsenite, aqueous solution.
Depending on the degree of exposure, periodic medical examination is suggested.
Do NOT take working clothes home.
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 2005
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