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ARSENIC TRICHLORIDE ICSC: 0221
Date of Peer Review: April 2000

Arsenic III chloride
Arsenous chloride
CAS # 7784-34-1 AsCl3
RTECS # CG1750000 Molecular mass: 181.2
UN # 1560
EC Index # 033-002-00-5
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.
NO contact with water and metals.
In case of fire in the surroundings: NO water.
EXPLOSION Risk of fire and explosion on contact with water and metals.


EXPOSURE
AVOID ALL CONTACT!
IN ALL CASES CONSULT A DOCTOR!
Inhalation Headache. Cough. Laboured breathing. Sore throat. (See Ingestion).
Closed system and ventilation.
Fresh air, rest. Half-upright position. Refer for medical attention.
Skin Redness. Pain.
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
Eyes Redness. Pain.
Safety spectacles, 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. Diarrhoea. Nausea. Vomiting. Shock or collapse.
Do not eat, drink, or smoke during work. Wash hands before eating.
Rinse mouth. Do NOT induce vomiting. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Evacuate danger area! Consult an expert! Personal protection: complete protective clothing including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Collect leaking and spilled liquid in sealable plastic containers as far as possible. Absorb remaining liquid in dry sand or inert absorbent and remove to safe place.
Unbreakable packaging; put breakable packaging into closed unbreakable container. Do not transport with food and feedstuffs. Marine pollutant.
EU Classification
Symbol: T, N
R: 23/25-50/53
S: (1/2-)-20/21-28-45-60-61
Note: [A]
UN Classification
UN Hazard Class: 6.1
UN Pack Group: I
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-61GT4-I
NFPA Code: H 3; F 0; R 0;
Separated from food and feedstuffs. Cool. Dry. Ventilation along the floor.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 2005

SEE IMPORTANT INFORMATION ON BACK
ARSENIC TRICHLORIDE ICSC: 0221
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS, OILY, FUMING LIQUID, WITH PUNGENT ODOUR.

CHEMICAL DANGERS:
The substance decomposes on heating producing toxic fumes of hydrogen chloride (see ICSC 0163) and arsenic oxides. Reacts violently with moist air or water to produce hydrogen chloride (see ICSC0163). Attacks many metals forming flammable/explosive gas (hydrogen - see ICSC 0001).

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 0.01 mg/m as TWA; A1 (confirmed human carcinogen); BEI issued; (ACGIH 2004).
MAK: Carcinogen category: 1; Germ cell mutagen group: 3A; (DFG 2004).
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its vapour and by ingestion.

INHALATION RISK:
A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is severely irritating to the eyes, the skin and the respiratory tract. The substance may cause effects on the gastrointestinal tract, cardiovascular system, central nervous system, resulting in severe gastroenteritis, loss of fluid, and electrolytes, cardiac disorders, shock, convulsions. Exposure above the OEL 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. The substance may have effects on the mucous membranes, skin, peripheral nervous system, liver and bone marrow, resulting in pigmentation disorders, hyperkeratosis, perforation of nasal septum, neuropathy, liver impairment and anaemia. This substance is carcinogenic to humans. Animal tests show that this substance possibly causes malformations in human babies.
PHYSICAL PROPERTIES
Boiling point: 130.2C
Melting point: -16C
Density: 2.1 g/cm
Solubility in water, g/100 ml: reaction
Vapour pressure, kPa at 20C: 1.17
Relative vapour density (air = 1): 6.3
Relative density of the vapour/air-mixture at 20C (air = 1): 1.06
ENVIRONMENTAL DATA
This substance may be hazardous to the environment; special attention should be given to soil, water organisms. It is strongly advised that this substance does not enter the environment.
NOTES
The apparent melting point caused by loss of crystal water is given. Depending on the degree of exposure, periodic medical examination is suggested. Do NOT take working clothes home. Card has been partly updated in October 2005. See sections Occupational Exposure Limits, Emergency Response.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 2005