PHOSPHORUS TRICHLORIDE†
| CAS # | 7719-12-2 |
|---|---|
| Formula |
PCl₃ |
| Synonyms |
phosphorus chloride |
| Physical description | Colorless to yellow, fuming liquid with an odor like hydrochloric acid. | ||
|---|---|---|---|
| Boiling point | 169°F | Molecular weight | 137.35 |
| Freezing point/melting point | -170°F | Vapor pressure | 100 mmHg at 69.8°F |
| Flash point | Vapor density | 4.75 | |
| Specific gravity | 1.58 | Ionization potential | 9.91 eV |
| Lower explosive limit (LEL) | Upper explosive limit (UEL) | ||
| NFPA health rating | 4 | NFPA fire rating | 0 |
| NFPA reactivity rating | 2 | NFPA special instruction | |
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Analyte code (IMIS no.) | 2093 | ||
|---|---|---|---|
| Sampling group | |||
| Sampler/Sampling media | Midget fritted glass bubbler (MFGB) containing 15 mL Distilled Water [Infrequently Requested Method - OSHA staff please contact SLTC before sampling 801-233-5100] | ||
| Sampling time* | |||
| Sampling volume (TWA)* | 11-100 L |
||
| Sampling flow rate (TWA)* | 0.05-0.2 L/min |
||
| Sampling volume (STEL/Peak/C)* | |||
| Sampling flow rate (STEL/Peak/C)* | |||
| Analytical method instruments | UV-VIS | ||
| Method reference | NIOSH 6402 (partially validated) | ||
| Notes | Ship in sealed bubblers. |
||
| 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 |
0.5 ppm (3 mg/m³) |
REL-TWA |
0.2 ppm (1.5 mg/m³) |
TLV-TWA |
0.2 ppm [1992] |
PEL-TWA |
0.2 ppm (1.5 mg/m³) |
| PEL-STEL | REL-STEL |
0.5 ppm (3 mg/m³) |
TLV-STEL |
0.5 ppm [1992] |
PEL-STEL |
0.5 ppm (3 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 |
25 ppm |
|||||
| Carcinogenic classifications: Not listed | Notes: | ||||||
|
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
0.5 ppm/3 ppm/15 ppm |
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Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Phosphorus trichloride NIOSH: Pocket Guide to Chemical Hazards - Phosphorus trichloride Literature References
|
Last Updated Date : 01/22/2024