ICSC 1208 - SODIUM ARSENATE DIBASIC

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SODIUM ARSENATE DIBASIC	ICSC: 1208 (June 2011)
Arsenic acid disodium salt Disodium arsenate Disodium hydrogen arsenate

CAS #: 7778-43-0

UN #: 1685

EC Number: 231-902-1

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.		In case of fire in the surroundings, use appropriate extinguishing media.

PREVENT DISPERSION OF DUST! AVOID ALL CONTACT!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Cough. Sore throat.	Use closed system, ventilation or breathing protection.	Fresh air, rest. Refer for medical attention.
Skin		Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse and then wash skin with water and soap. Seek medical attention if you feel unwell.
Eyes	Redness. Pain.	Wear face shield or eye protection in combination with breathing protection.	Rinse with plenty of water for several minutes (remove contact lenses if easily possible). Refer for medical attention.
Ingestion	Abdominal pain. Burning sensation in the throat and chest. Diarrhoea. Vomiting. Headache. Weakness. Shock or collapse.	Do not eat, drink, or smoke during work. Wash hands before eating.	Rinse mouth. Refer immediately for medical attention.

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Vacuum with specialist equipment (See Notes) or carefully sweep into containers. Carefully collect remainder. Then store and dispose of according to local regulations.	According to UN GHS Criteria Fatal if swallowed Causes eye irritation May cause cancer Suspected of damaging fertility or the unborn child Causes damage to digestive tract if swallowed Causes damage to organs through prolonged or repeated exposure Harmful to aquatic life with long lasting effects Transportation UN Classification UN Hazard Class: 6.1; UN Pack Group: II
STORAGE
Separated from acids and food and feedstuffs. Well closed. Dry. Do NOT store or transport in containers made from metal. Store in an area without drain or sewer access.
PACKAGING
Do not transport with food and feedstuffs.

SODIUM ARSENATE DIBASIC

ICSC: 1208

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS-TO-WHITE CRYSTALS OR POWDER. Physical dangers No data. Chemical dangers Decomposes on heating. This produces toxic and corrosive fumes. Reacts with acids. This produces toxic arsine gas (see ICSC 0222). Attacks many metals such as iron, aluminium and zinc in the presence of water. This produces toxic fumes of arsenic (see ICSC 0013) and arsine (see ICSC 0222).	Formula: AsHNa₂O₄ / HNa₂AsO₄ Molecular mass: 185.9 Decomposes at 150°C Density: 1.87 g/cm³ Solubility in water, g/100ml at 15°C: 61 (good)

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS-TO-WHITE CRYSTALS OR POWDER.

Physical dangers
No data.

Chemical dangers
Decomposes on heating. This produces toxic and corrosive fumes. Reacts with acids. This produces toxic arsine gas (see ICSC 0222). Attacks many metals such as iron, aluminium and zinc in the presence of water. This produces toxic fumes of arsenic (see ICSC 0013) and arsine (see ICSC 0222).

Formula: AsHNa₂O₄ / HNa₂AsO₄
Molecular mass: 185.9
Decomposes at 150°C
Density: 1.87 g/cm³
Solubility in water, g/100ml at 15°C: 61 (good)

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation of its aerosol and by ingestion. Effects of short-term exposure The substance is irritating to the eyes and respiratory tract. Ingestion could cause effects on the gastrointestinal tract. This may result in severe gastroenteritis, loss of fluids and electrolytes, cardiac disorders and shock. Exposure far above the OEL could cause death. The effects may be delayed. Medical observation is indicated.	Inhalation risk A harmful concentration of airborne particles can be reached quickly when dispersed, especially if powdered. Effects of long-term or repeated exposure The substance may have effects on the skin, mucous membranes, peripheral nervous system, bone marrow and liver. This may result in pigmentation disorders, hyperkeratosis, perforation of the nasal septum, neuropathy, anaemia and liver impairment. This substance is carcinogenic to humans. Animal tests show that this substance possibly causes toxicity to human reproduction or development.

EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
The substance is irritating to the eyes and respiratory tract. Ingestion could cause effects on the gastrointestinal tract. This may result in severe gastroenteritis, loss of fluids and electrolytes, cardiac disorders and shock. Exposure far above the OEL could cause death. The effects may be delayed. Medical observation is indicated.

Inhalation risk
A harmful concentration of airborne particles can be reached quickly when dispersed, especially if powdered.

Effects of long-term or repeated exposure
The substance may have effects on the skin, mucous membranes, peripheral nervous system, bone marrow and liver. This may result in pigmentation disorders, hyperkeratosis, perforation of the nasal septum, neuropathy, anaemia and liver impairment. This substance is carcinogenic to humans. Animal tests show that this substance possibly causes toxicity to human reproduction or development.

OCCUPATIONAL EXPOSURE LIMITS
TLV: (as As): 0.01 mg/m³, as TWA; A1 (confirmed human carcinogen); BEI issued. MAK: skin absorption (H); carcinogen category: 1; germ cell mutagen group: 3A. EU-OEL: (inhalable fraction): 0.01 mg/m³ as TWA; (see Notes)

ENVIRONMENT
The substance is harmful to aquatic organisms. This substance does enter the environment under normal use. Great care, however, should be taken to avoid any additional release, for example through inappropriate disposal.

NOTES
NEVER use a domestic-type vacuum cleaner to vacuum the substance, only use specialist equipment. Depending on the degree of exposure, periodic medical examination is suggested. Do NOT take working clothes home. For the copper smelting sector, the EU OEL value shall apply from 11 July 2023.

ADDITIONAL INFORMATION

EC Classification
Symbol: T, N; R: 45-23/25-50/53; S: 53-45-60-61; Note: A, E

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