ARSINE†

Chemical Identification
Chemical Identification
CAS # 7784-42-1
Formula

AsH₃

Synonyms

arsenic hydride; arsenic trihydride; arsenous hydride; hydrogen arsenide

Physical Properties
Physical Properties
Physical description Colorless gas with a mild, garlic-like odor.
Boiling point -81°F Molecular weight 78.0
Freezing point/melting point -179°F Vapor pressure 14.9 atm at 70°F
Flash point Vapor density 2.69
Specific gravity 1.689 at 185°F Ionization potential 9.89 eV
Lower explosive limit (LEL) 5.1% Upper explosive limit (UEL) 78%
NFPA health rating 4 NFPA fire rating 4
NFPA reactivity rating 2 NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs
Monitoring Methods Used by OSHA
Monitoring Methods Used by OSHA
Analyte code (IMIS no.) 0270
Sampling group
Sampler/Sampling media CSC tube (100/50 mg) [SKC 226-01]
Sampling time*
Sampling volume (TWA)*

0.1-10 L

Sampling flow rate (TWA)*

0.01-0.2 L/min

Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments AAS-GF
Method reference NIOSH 6001 (fully validated)
Notes

Results will be reported from the elemental analysis for the element only; the stated identity of the actual sample contents is based on the assumption that the material sampled is as identified by the compliance officer using available documentation of materials and processes.

An elemental result provided may be converted to the desired compound by multiplying the result by the appropriate stoichiometric factor. A 91B report specific to the compound (including the stoichiometric conversion) may by be provided upon request by contacting the laboratory. The stoichiometric factor for arsine from arsenic is 1.040.

Special requirements

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Wipe Method
Wipe Method
Sampler/Sampling media
Bulk Method
Bulk Method
On-Site Screening Techniques
On-Site Screening Techniques
Device Detector tube Detector tube Detector tube Detector tube Colorimetric badge
Model/Type Dräger - Arsine 0.5/a, CH25001 Matheson-Kitagawa 8014-140SA Matheson-Kitagawa 8014-121U Gastec 19LA K&M Enviro Products, SafeAir Arsine monitor, 382030-50
Sampling information
(see manufacturer instructions)
20 strokes, approx 0.03-3 ppm range, uncertainty 25-33% follow mfr instructions, approx 5-160 ppm range follow mfr instructions, approx 0.05-2 ppm range 1-10 strokes, 0.02-10 ppm range, uncertainty 16.4% for 0.1 to 0.5 ppm, 8.2% for 0.5 to 1.5 ppm 0.25-12 hr exposure, 2.25 ppb for 8 hr exposure-4 ppm for 15 min exposure
Exposure Limits
Exposure Limits
OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA

0.05 ppm (0.2 mg/m³)

REL-TWA TLV-TWA

0.005 ppm [2006]

PEL-TWA

0.05 ppm (0.2 mg/m³)

PEL-STEL REL-STEL TLV-STEL PEL-STEL
PEL-C REL-C

0.002 mg/m³ [15 minute]

TLV-C PEL-C
Skin notation

N

Skin notation

N

Skin notation

N

Skin notation

N

Notes:

See 29 CFR 1910.1000 Table Z-1.

Notes:

CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A.

Notes: Notes:
Health factors:  See NIH-NLM PubChem. IDLH

3 ppm

Carcinogenic classifications: NIOSH-Ca Notes:

Ca

AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

--/0.5 ppm/1.5 ppm

Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Arsine

NIOSH: Pocket Guide to Chemical Hazards - Arsine

Literature References

  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Arsine. See annual publication for most recent information.
  • Klimecki, W.T. and Carter, D.E.: Arsine toxicity: chemical and mechanistic implications. J. Toxicol. Environ. Health 46 : 399-409, 1995.

Last Updated Date : 12/17/2020