International Chemical Safety Cards

DISODIUM ARSENATE

ICSC: 0326

Arsenic acid, disodium salt, heptahydrate
Sodium arsenate heptahydrate
Sodium arsenate, dibasic, heptahydrate
Na₂HAsO₄• 7H₂O
Molecular mass: 312.0

ICSC #    0326
CAS #     10048-95-0
RTECS # CG0900000
UN #        1685
EC #         033-005-00-1
September 23, 1993 Peer reviewed

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.
Note: A; Note: E
Marine pollutant.
T symbol
R: 45-23/25
S: 53-45
UN Hazard Class: 6.1
UN Packing Group: II

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 (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

International Chemical Safety Cards

DISODIUM ARSENATE

ICSC: 0326

I

M

P

O

R

T

A

N

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D

A

T

A

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:
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 20°C; 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): 180°C
Melting point: 130°C

Relative density (water = 1): 1.9
Solubility in water, g/100 ml at 0°C: 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
(C) IPCS, CEC, 1994

IMPORTANT LEGAL NOTICE:

Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, 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. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.