GALLIUM ARSENIDE | Occupational Safety and Health Administration

GALLIUM ARSENIDE‡

Chemical Identification
CAS #	1303-00-0
Formula	AsGa
Synonyms	gallium monoarsenide

Physical Properties
Physical description	Dark gray crystals with a metallic greenish-blue sheen or gray powder.
Boiling point		Molecular weight	144.64
Freezing point/melting point	2260°F	Vapor pressure
Flash point		Vapor density
Specific gravity	5.31	Ionization potential
Lower explosive limit (LEL)		Upper explosive limit (UEL)
NFPA health rating	3	NFPA fire rating	1
NFPA reactivity rating	2	NFPA special instruction	W: Reacts violently or explosively with water.
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)	0260
Sampling group
Sampler/Sampling media
Sampling time^*
Sampling volume (TWA)^*
Sampling flow rate (TWA)^*
Sampling volume (STEL/Peak/C)^*
Sampling flow rate (STEL/Peak/C)^*
Analytical method instruments
Method reference
Notes	See ARSENIC, INORGANIC
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.

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

On-Site Screening Techniques
Device
Model/Type
Sampling information (see manufacturer instructions)

**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	0.01 mg/m³ [5 µg/m³ Action Level] (as As)	REL-TWA		TLV-TWA	0.0003 mg/m³ (respirable particulate matter) [2004]	PEL-TWA	0.01 mg/m³
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL
PEL-C		REL-C	0.002 mg/m³ [15 minutes]	TLV-C		PEL-C
Skin notation	N	Skin notation	N	Skin notation	N	Skin notation	N
Notes: See See 29 CFR 1910.1018, Inorganic arsenic.		Notes: as As, CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A, NIOSH Potential Occupational Carcinogens.		Notes:		Notes: as Arsenic and inorganic arsenic compounds, see See California Code of Regulations, Title 8, Section 5214. Inorganic Arsenic.
Health factors: See NIH-NLM PubChem.		IDLH
Carcinogenic classifications: NIOSH-Ca, IARC-1, TLV-A3		Notes: Ca (as As)
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Gallium arsenide

NIOSH: Pocket Guide to Chemical Hazards - Not established. See Arsenic (inorganic compounds, as As)

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Gallium arsenide. See annual publication for most recent information.
ATSDR: Toxicological Profile for Arsenic. August 2007.
Col, M., Col, C., Soran, A., Sayli, B.S., Ozturk, S.: Arsenic-related Bowen's disease, palmar keratosis, and skin cancer. Environmental Health perspectives. 107(8):687-689, 1999.
Kreuzer M, Straif K, Marsh JW, Dufey F, Grosche B, Nosske D, Sogl M.: Occupational dust and radiation exposure and mortality from stomach cancer among German uranium miners, 1946-2003. Occup Environ Med. 69(3):217-23, March 2012.
Navas-Acien A, Sharrett AR, Silbergeld EK et al.: Arsenic exposure and cardiovascular disease - A systematic review of the epidemiologic evidence. Am J Epidemiol. 162(11):1037-1049, 2005.
NIOSH: Occupational Safety and Health Standards - Toxic and Hazardous Substances - Inorganic Arsenic. 1910.1018.
NIOSH: Occupational Safety and Health Guideline for Inorganic Arsenic and its Compounds (as As) Potential Human Carcinogen. 1988.
OSHA. Occupational Safety and Health Standards, Medical surveillance guidelines - Inorganic arsenic. 29 CFR 1910.1018 App C.

Last Updated Date : 12/31/2020

GALLIUM ARSENIDE‡

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References