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ARSENIC ACID
ARSENIC ACID
- CAS:
- 7778-39-4
- MF:
- AsH3O4
- MW:
- 141.94
Properties
- Melting point:
- 35.5℃ [HAW93]
- Boiling point:
- 160℃[at 101 325 Pa]
- Density
- 2.5 [CRC10]
- vapor pressure
- 18.45hPa at 25℃
- solubility
- very soluble in H2O, ethanol
- pka
- 3.09±0.10(Predicted)
- form
- exists only in solution
- color
- exists only in solution
- Water Solubility
- very soluble H2O, EtOH [CRC10]
- Stability:
- Incompatible with metals.
Safety Information
- Symbol(GHS)
GHS08,GHS09,GHS06
- Signal word
- Danger
- Hazard statements
- H331-H350-H301-H410-H400
- Precautionary statements
- P261-P271-P304+P340-P311-P321-P403+P233-P405-P501-P273-P391-P501-P264-P270-P301+P310-P321-P330-P405-P501-P273-P391-P501
- RIDADR
- 1554
- HazardClass
- 6.1(a)
- PackingGroup
- II
Use
Arsenic acid is absorbed into the body by inhalation of its vapor, through the skin, and by ingestion. Arsenic acid is an eye irritant and may cause burns. Most injuries result from exposure to dusts, causing conjunctivitis, lacrimation, photophobia, and chemosis. Exposures to arsenic acid cause poisoning with symptoms of irritation of the eyes, the skin, the respiratory tract, respiratory distress, sore throat, nausea, vomiting, diarrhea, poor appetite, and stomach cramps. Arsenic acid also causes effects on the blood, cardiovascular system, gastrointestinal tract, liver, and peripheral nervous system, leading to polyneuropathy and convulsions. Repeated exposures to high concentrations of arsenic acid have been reported to cause nerve damage, with “pins and needles,” numbness, and weakness of the arms and legs, and even death. Tachycardia is frequently reported following ingestion of arsenic acid salts and is contributed to by anxiety, intravascular fl uid depletion, and possibly direct arsenic-induced cardiotoxicity.
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