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SILICON TETRAHYDRIDE
| CAS # | 7803-62-5 |
|---|---|
| Formula |
SiH₄ |
| Synonyms |
monosilane; silane; silicane |
| Physical description | Colorless gas with a repulsive odor. | ||
|---|---|---|---|
| Boiling point | -169°F | Molecular weight | 32.1 |
| Freezing point/melting point | -301°F | Vapor pressure | >1 atm |
| Flash point | Vapor density | 1.11 | |
| Specific gravity | Ionization potential | ||
| Lower explosive limit (LEL) | Upper explosive limit (UEL) | ||
| NFPA health rating | 1 | NFPA fire rating | 4 |
| NFPA reactivity rating | 3 | NFPA special instruction | |
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Analyte code (IMIS no.) | |
|---|---|
| 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 | |
| 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 Sampler/Sampling media | |
|---|---|
| Bulk Method |
| Device | |||||
|---|---|---|---|---|---|
| Model/Type | |||||
|
Sampling information (see manufacturer instructions) |
|
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 | REL-TWA |
5 ppm (7 mg/m³) |
TLV-TWA |
5 ppm [2014] |
PEL-TWA |
5 ppm (7 mg/m³) |
|
| PEL-STEL | REL-STEL | TLV-STEL | PEL-STEL | ||||
| PEL-C | REL-C | TLV-C | PEL-C | ||||
| Skin notation |
NA |
Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
|
Notes:
Not established |
Notes: | Notes: | Notes: | ||||
| Health factors: See NIH-NLM PubChem. | IDLH | ||||||
| Carcinogenic classifications: Not listed | Notes: | ||||||
| AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: | |||||||
Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Silane NIOSH: Pocket Guide to Chemical Hazards - Silicon tetrahydride Literature References
|
Last Updated Date : 01/12/2021