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Arsine																				Related Pages
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

FormulaAsH3
	Conversion
			1 ppm = 3.19 mg/m3
	IDLH
			Ca [3 ppm]See: 7784421

Exposure Limits
			NIOSH RELCa 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.]													
										
Molecular Weight78.0	
	Boiling Point-81°F
	Freezing Point-179°F
	Solubility20%
	Vapor Pressure(70°F): 14.9 atm
	Ionization Potential9.89 eV											
Flash PointNA (Gas)
	Upper Explosive Limit78%
	Lower Explosive Limit5.1%
	Relative Gas Density2.69
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 concernAny appropriate escape-type, self-contained breathing apparatus
				Important additional information about respirator selection
See also
			INTRODUCTION
					  ICSC CARD: 0222
					  MEDICAL TESTS: 0018

			
							

			Page last reviewed:  October 30, 2019						Content
							source: 	National Institute for Occupational Safety and Health NIOSH Pocket Guide to Chemical Hazards
Introduction
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Chemical Names, Synonyms and Trade Names
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CAS Numbers
RTECS Numbers
Appendices
A – NIOSH Potential Occupational Carcinogens
B – Thirteen OSHA-Regulated Carcinogens
C – Supplementary Exposure Limits
D – Substances with No Established RELs
E – OSHA Respirator Requirements for Selected Chemicals
F – Miscellaneous Notes
G – 1989 Air Contaminants Update Project: Exposure Limits NOT in Effect
Type C & CE – Definitions for Type C and Type CE Respirators
Personal Protection and Sanitation Codes
First Aid Procedures Follow NIOSH Facebook
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