DIBORANE†
| CAS # | 19287-45-7 |
|---|---|
| Formula |
B₂H₆ |
| Synonyms |
boroethane; boron hydride; diboron hexahydride |
| Physical description | Colorless gas with a repulsive, sweet odor. | ||
|---|---|---|---|
| Boiling point | -135°F | Molecular weight | 27.7 |
| Freezing point/melting point | -265°F | Vapor pressure | 224 mmHg at -169°F |
| Flash point | -130°F | Vapor density | 0.97 |
| Specific gravity | 0.447 at -169.6°F | Ionization potential | 11.38 eV |
| Lower explosive limit (LEL) | 0.8% | Upper explosive limit (UEL) | 88% |
| NFPA health rating | 4 | NFPA fire rating | 4 |
| NFPA reactivity rating | 3 | NFPA special instruction | W: Reacts violently or explosively with water |
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Analyte code (IMIS no.) | 0862 | ||
|---|---|---|---|
| Sampling group | |||
| Sampler/Sampling media | PTFE filter & oxidizer-impregnated charcoal (100/50 mg) [no longer available] | ||
| Sampling time* | |||
| Sampling volume (TWA)* | 60-260 L |
||
| Sampling flow rate (TWA)* | 0.5-1 L/min |
||
| Sampling volume (STEL/Peak/C)* | |||
| Sampling flow rate (STEL/Peak/C)* | |||
| Analytical method instruments | ICP | ||
| Method reference | NIOSH 6006 (fully validated) | ||
| Notes | This media is no longer available. OSHA staff please contact the SLTC prior to sampling at (801) 233-5100. |
||
| 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 | Detector tube | Infrared spectrophotometer | |||
|---|---|---|---|---|---|
| Model/Type | Dräger 6718101 | Miran 1A & 1B | |||
|
Sampling information (see manufacturer instructions) |
0.05-3 ppm range | 0.6 ppm@3.8 µm |
|
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 |
0.1 ppm (0.1 mg/m³) |
REL-TWA |
0.1 ppm (0.1 mg/m³) |
TLV-TWA |
0.1 ppm [1990] |
PEL-TWA |
0.1 ppm |
| 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 |
15 ppm |
|||||
| Carcinogenic classifications: Not listed | Notes: | ||||||
|
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
--/1 ppm/3 ppm |
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Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Diborane NIOSH: Pocket Guide to Chemical Hazards - Diborane Literature References
|
Last Updated Date : 01/22/2024