Arsine
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CAS
7784-42-1
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AsH3
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RTECS
CG6475000
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Synonyms & Trade Names
Arsenic hydride, Arsenic trihydride, Arseniuretted hydrogen, Arsenous hydride, Hydrogen arsenide
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DOT ID & Guide
2188 119
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Exposure
Limits
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NIOSH REL: Ca C 0.002 mg/m3 [15-minute] See Appendix A
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OSHA PEL: TWA 0.05 ppm (0.2 mg/m3)
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IDLH
Ca [3 ppm]
See: 7784421
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Conversion
1 ppm = 3.19 mg/m3
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Physical Description
Colorless gas with a mild, garlic-like odor. [Note: Shipped as a liquefied compressed gas.]
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MW: 78.0
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BP: -81°F
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FRZ: -179°F
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Sol: 20%
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VP(70°F): 14.9 atm
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IP: 9.89 eV
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RGasD: 2.69
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Fl.P: NA (Gas)
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UEL: 78%
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LEL: 5.1%
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Flammable Gas
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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.]
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Measurement Methods
NIOSH 6001; OSHA ID105
See: NMAM or OSHA Methods
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Personal Protection & Sanitation (See protection codes)
Skin: Frostbite
Eyes: Frostbite
Wash skin: No recommendation
Remove: When wet (flammable)
Change: No recommendation
Provide: Frostbite wash
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First Aid (See procedures)
Eye: Frostbite
Skin: Frostbite
Breathing: Respiratory support
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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
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Exposure Routes
inhalation, skin and/or eye contact (liquid)
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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]
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Target Organs
Blood, kidneys, liver
Cancer Site
[lung & lymphatic cancer]
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See also: INTRODUCTION
See ICSC CARD: 0222 See MEDICAL TESTS: 0018
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