DISODIUM ARSENATE

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 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