DIAMMONIUM HYDROGEN ARSENATE 1207
October 1999
CAS No: 7784-44-3 Arsenic acid, diammonium salt
Ammonium arsenate
RTECS No: CG0850000
(NH4)2HAsO4
UN No: 1546
Molecular mass: 176.0
EC No: 033-005-00-1
TYPES OF
ACUTE HAZARDS/SYMPTOMS PREVENTION FIRST AID/FIRE FIGHTING
HAZARD/
EXPOSURE
FIRE Not combustible. Gives off irritating In case of fire in the surroundings:
or toxic fumes (or gases) in a fire. use appropriate extinguishing media.
EXPLOSION
EXPOSURE PREVENT DISPERSION OF DUST! IN ALL CASES CONSULT A
AVOID ALL CONTACT! AVOID DOCTOR!
EXPOSURE OF (PREGNANT)
WOMEN!
Inhalation Cough. Sore throat. Headache. Closed system and ventilation. Fresh air, rest. Refer for medical
Laboured breathing. Weakness. attention.
See Ingestion.
Skin Redness. 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 First rinse with plenty of water for
combination with breathing protection several minutes (remove contact
if powder. lenses if easily possible), then take to
a doctor.
Ingestion Abdominal pain. Diarrhoea. Do not eat, drink, or smoke during Rinse mouth. Give a slurry of
Vomiting. Burning sensation in the work. Wash hands before eating. activated charcoal in water to drink.
throat and chest. Shock or collapse. Induce vomiting (ONLY IN
CONSCIOUS PERSONS!). Refer for
medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Vacuum spilled material. Carefully collect remainder, T Symbol Unbreakable packaging; put
then remove to safe place. Do NOT let this chemical N Symbol breakable packaging into closed
enter the environment. Chemical protection suit R: 45-23/25-50/53 unbreakable container. Do not
including self-contained breathing apparatus. S: 53-45-60-61 transport with food and feedstuffs.
Note: A, E Marine pollutant.
UN Hazard Class: 6.1
UN Pack Group: II
EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-61GT5-II Separated from acids, food and feedstuffs. Well closed.
Prepared in the context of cooperation between the International
IPCS Programme on Chemical Safety and the European Commission 漏
IPCS 2005
International
Programme on
SEE IMPORTANT INFORMATION ON THE BACK.
Chemical Safety
1207 DIAMMONIUM HYDROGEN ARSENATE
IMPORTANT DATA
Physical State; Appearance Routes of exposure
COLOURLESS CRYSTALS, WITH CHARACTERISTIC ODOUR. The substance can be absorbed into the body by inhalation of its
aerosol and by ingestion.
Chemical dangers
Inhalation risk
The substance decomposes on heating producing toxic fumes
including ammonia, nitrogen oxides and arsenic fumes. Reacts Evaporation at 20/C is negligible; a harmful concentration of
with bases to produce ammonia. Attacks many metals in airborne particles can, however, be reached quickly when
presence of water such as iron, aluminium and zinc, releasing dispersed.
toxic fumes of arsine (see ICSC 0222).
Effects of short-term exposure
Occupational exposure limits The substance is irritating to the eyes, the skin and the respiratory
TLV: (as As) 0.01 mg/m 3; A1 (confirmed human carcinogen); BEI tract. The substance may cause effects on the gastrointestinal
issued; (ACGIH 2004). tract, central nervous system, cardiovascular system and
MAK: Carcinogen category: 1; Germ cell mutagen group: 3A; kidneys, resulting in severe gastroenteritis, loss of fluids and
(DFG 2004). electrolytes, shock, cardiac disorders and kidney impairment.
Exposure above the OEL may result in death. The effects may be
delayed.
Effects of long-term or repeated exposure
Repeated or prolonged contact with skin may cause dermatitis.
The substance may have effects on the skin, mucous
membranes, peripheral nervous system, bone marrow and liver,
resulting in pigmentation disorders, perforation of nasal septum,
neuropathy and liver impairment. This substance is carcinogenic
to humans. Animal tests show that this substance possibly
causes malformations in human babies.
PHYSICAL PROPERTIES
Density: 2.0 g/cm3 Solubility in water: good
ENVIRONMENTAL DATA
This substance may be hazardous in the environment; special attention should be given to ground water contamination, aquatic
organisms and soil organisms. It is strongly advised that this substance does not enter the environment.
NOTES
Depending on the degree of exposure, periodic medical examination is suggested.
Do NOT take working clothes home.
Card has been partly updated in April 2005. See sections Occupational Exposure Limits, Emergency Response. October 2005: see
section Effects of long-term or repeated exposure.
ADDITIONAL INFORMATION
Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible
LEGAL NOTICE for the use which might be made of this information
漏IPCS 2005
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