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)* |
|
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| Sampling flow rate (STEL/Peak/C)* | ||||||
| Analytical method instruments | ||||||
| Method reference | ||||||
| Notes |
Please see SELENIUM & COMPOUNDS. |
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| Special requirements |
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* 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 |
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| 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:
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| Health factors: See NIH-NLM PubChem. | IDLH |
1 ppm |
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| Carcinogenic classifications: Not listed |
Notes:
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|
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
--/0.2 ppm/2 ppm |
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| Additional Resources and Literature References |
|---|
|
NOAA: CAMEO Chemicals - Hydrogen selenide, anhydrous NIOSH: Pocket Guide to Chemical Hazards - Hydrogen selenide Literature References
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Last Updated Date : 12/31/2020