PENTABORANE†
| CAS # | 19624-22-7 |
|---|---|
| Formula |
B₅H₉ |
| Synonyms |
pentaboron nonahydride |
| Physical description | Colorless liquid with a pungent odor like sour milk. | ||
|---|---|---|---|
| Boiling point | 140°F | Molecular weight | 63.17 |
| Freezing point/melting point | -52°F | Vapor pressure | 171 mmHg |
| Flash point | 86°F | Vapor density | |
| Specific gravity | 0.62 | Ionization potential | 9.90 eV |
| Lower explosive limit (LEL) | 0.42% | Upper explosive limit (UEL) | 98% |
| NFPA health rating | 4 | NFPA fire rating | 4 |
| NFPA reactivity rating | 2 | 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 |
0.005 ppm (0.01 mg/m³) |
REL-TWA |
0.005 ppm (0.01 mg/m³) |
TLV-TWA |
0.005 ppm [1970] |
PEL-TWA |
0.005 ppm (0.01 mg/m³) |
| PEL-STEL | REL-STEL |
0.015 ppm (0.03 mg/m³) |
TLV-STEL |
0.015 ppm [1970] |
PEL-STEL |
0.015 ppm (0.03 mg/m³) |
|
| 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: | |||||||
Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Pentaborane NIOSH: Pocket Guide to Chemical Hazards - Pentaborane Literature References
|
Last Updated Date : 01/08/2021