HYDROGEN SELENIDE†
Chemical Identification | |
---|---|
CAS # | 7783-07-5 |
Formula |
H₂Se |
Synonyms |
selenium dihydride; selenium hydride |
Physical Properties | |||
---|---|---|---|
Physical description | Colorless gas with an odor resembling decayed horseradish. | ||
Boiling point | -42°F | Molecular weight | 80.98 |
Freezing point/melting point | -87°F | Vapor pressure | 9.5 atm at 70°F |
Flash point | Vapor density | 2.12 at -43.6°F | |
Specific gravity | Ionization potential | 9.88 eV | |
Lower explosive limit (LEL) | Upper explosive limit (UEL) | ||
NFPA health rating | NFPA fire rating | ||
NFPA reactivity rating | NFPA special instruction | ||
Vapor hazard ratio (VHR) | |||
Historical exceedance percentage | |||
Target organs |
Monitoring Methods Used by OSHA | ||||||
---|---|---|---|---|---|---|
Analyte code (IMIS no.) | 1475 | |||||
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 | Please see SELENIUM & COMPOUNDS. |
|||||
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 | |
---|---|
Sampler/Sampling media |
|
Bulk Method |
---|
|
On-Site Screening Techniques | ||||||
---|---|---|---|---|---|---|
Device | Detector tube | |||||
Model/Type | Matheson-Kitagawa 8014-167S | |||||
Sampling information (see manufacturer instructions) |
follow mfr instructions, 1-600 ppm range |
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 |
|||||
PEL-TWA |
0.05 ppm (0.2 mg/m³) |
REL-TWA |
0.05 ppm (0.2 mg/m³) |
TLV-TWA |
0.05 ppm [1990] |
PEL-TWA |
0.05 ppm (0.2 mg/m³) |
PEL-STEL |
|
REL-STEL |
|
TLV-STEL |
|
PEL-STEL |
|
PEL-C |
|
REL-C |
|
TLV-C |
|
PEL-C |
|
Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
Notes: |
Notes:
|
Notes:
|
Notes:
|
||||
Health factors: See NIH-NLM PubChem. | IDLH |
1 ppm |
|||||
Carcinogenic classifications: Not listed |
Notes:
|
||||||
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
--/0.2 ppm/2 ppm |
Additional Resources and Literature References |
---|
NOAA: CAMEO Chemicals - Hydrogen selenide, anhydrous NIOSH: Pocket Guide to Chemical Hazards - Hydrogen selenide Literature References
|
Last Updated Date : 12/31/2020