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Arsine

Synonyms & Trade Names
Arsenic hydride, Arsenic trihydride, Arseniuretted hydrogen, Arsenous hydride, Hydrogen arsenide
CAS No.
7784-42-1
RTECS No.
CG6475000
DOT ID & Guide
2188 119
Formula
AsH3
Conversion
1 ppm = 3.19 mg/m3
IDLH
Ca [3 ppm]
See: 7784421
Exposure Limits
NIOSH REL
: Ca C 0.002 mg/m3 [15-minute] See Appendix A
OSHA PEL
: TWA 0.05 ppm (0.2 mg/m3)
Measurement Methods

NIOSH 6001;
OSHA ID105
See: NMAM or OSHA Methods
Physical Description
Colorless gas with a mild, garlic-like odor. [Note: Shipped as a liquefied compressed gas.]
MW:
78.0
BP:
-81°F
FRZ:
-179°F
Sol:
20%		 VP(70°F): 14.9 atm
IP:
9.89 eV
Fl.P:
NA (Gas)
UEL:
78%
LEL:
5.1%
RGasD:
2.69
Flammable Gas
Incompatibilities & Reactivities
Strong oxidizers, chlorine, nitric acid [Note: Decomposes above 446°F. There is a high potential for the generation of arsine gas when inorganic arsenic is exposed to nascent (freshly formed) hydrogen.]
Exposure Routes
inhalation, skin and/or eye contact (liquid)
Symptoms
headache, malaise (vague feeling of discomfort), lassitude (weakness, exhaustion), dizziness; dyspnea (breathing difficulty); abdominal, back pain; nausea, vomiting; bronze skin; hematuria (blood in the urine); jaundice; peripheral neuropathy; liquid: frostbite; [potential occupational carcinogen]
Target Organs
Blood, kidneys, liver
Cancer Site
[lung & lymphatic cancer]
Personal Protection/Sanitation
(See protection codes)
Skin: Frostbite
Eyes: Frostbite
Wash skin: No recommendation
Remove: When wet (flammable)
Change: No recommendation
Provide: Frostbite wash
First Aid
(See procedures)
Eye: Frostbite
Skin: Frostbite
Breathing: Respiratory support
Respirator Recommendations

NIOSH

At concentrations above the NIOSH REL, or where there is no REL, at any detectable concentration:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus

Escape:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted canister providing protection against the compound of concern
Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

See also: INTRODUCTION   See ICSC CARD: 0222   See MEDICAL TESTS: 0018
 

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