ICSC 1603 - SODIUM ARSENITE

[List of Chemicals] [Risk Notes] [Risk Phrases] [Safety Phrases] [Danger Symbols]

SODIUM ARSENITE

ICSC: 1603
_{October 2005}

Arsenious acid, sodium salt
Sodium meta-arsenite
Sodium dioxoarsenate

CAS No: 7784-46-5
RTECS No: CG3675000
UN No: 2027
EC No: 033-002-00-5

NaAsO₂
Molecular mass: 129.9

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: use appropriate extinguishing media.
EXPLOSION

EXPOSURE		PREVENT DISPERSION OF DUST! AVOID ALL CONTACT! AVOID EXPOSURE OF (PREGNANT) WOMEN!	IN ALL CASES CONSULT A DOCTOR!
Inhalation	Cough. Headache. Laboured breathing. Sore throat. See Ingestion.	Closed system and ventilation.	Fresh air, rest. Refer for medical attention.
Skin	MAY BE ABSORBED! 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.	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 in the throat and chest. Vomiting. Diarrhoea. Dizziness. Headache. Shock or collapse.	Do not eat, drink, or smoke during work. Wash hands before eating.	Rinse mouth. Give a slurry of activated charcoal in water to drink. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention.

SPILLAGE DISPOSAL	PACKAGING & LABELLING
Personal protection: chemical protection suit including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Vacuum spilled material with special equipment. Sweep spilled substance into sealable plastic containers. Carefully collect remainder, then remove to safe place.	T Symbol N Symbol R: 23/25-50/53 S: (1/2-)20/21-28-45-60-61 Note: A, 1 UN Hazard Class: 6.1 UN Pack Group: II	Unbreakable packaging; put breakable packaging into closed unbreakable container. Do not transport with food and feedstuffs.

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.

IMPORTANT DATA

Physical State; Appearance
WHITE OR GREY HYGROSCOPIC POWDER

Chemical dangers
Upon heating, toxic fumes are formed. Reacts with acids and strong oxidants to produce toxic arsine gas (see ICSC 0222). Attacks many metals forming flammable/explosive gas (hydrogen - see ICSC 0001) and arsine.

Occupational exposure limits
TLV: (as As) 0.01 mg/m³ as TWA; A1 (confirmed human carcinogen); BEI issued; (ACGIH 2005).
MAK: (arsenic and inorganic arsenic compounds); EKA, BLW issued; Carcinogen category: 1; Germ cell mutagen group: 3A; (DFG 2005).

Routes of exposure
The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion.

Inhalation risk
A harmful concentration of airborne particles can be reached quickly when dispersed.

Effects of short-term exposure
The substance is irritating to the eyes the skin and the respiratory tract. The substance may cause effects on the cardiovascular system, nervous system, gastrointestinal tract and kidneys, resulting in severe gastroenteritis, loss of fluids and electrolytes, kidney impairment, cardiac disorders, collapse, shock. 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, 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	ENVIRONMENTAL DATA
Melting point: 615°C Density: 1.87 g/cm³ Solubility in water: very good	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.

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004

LEGAL NOTICE

Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.

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