TRIORTHOCRESYL PHOSPHATE†
| CAS # | 78-30-8 |
|---|---|
| Formula |
C₂₁H₂₁O₄P |
| Synonyms |
TCP; TOCP; tri-o-cresyl ester of phosphoric acid; tri-o-cresyl phosphate; tricresyl phosphate |
| Physical description | Colorless to pale-yellow, odorless liquid or solid (below 52°F). | ||
|---|---|---|---|
| Boiling point | 770°F (Slight decomposition) | Molecular weight | 368.4 |
| Freezing point/melting point | -22-(-)13°F | Vapor pressure | 0.00002 mmHg at 77°F |
| Flash point | 437°F | Vapor density | 12.7 |
| Specific gravity | 1.16 | Ionization potential | |
| Lower explosive limit (LEL) | Upper explosive limit (UEL) | ||
| NFPA health rating | 1 | NFPA fire rating | 1 |
| NFPA reactivity rating | 0 | NFPA special instruction | |
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Analyte code (IMIS no.) | 2532 | ||
|---|---|---|---|
| Sampling group | |||
| Sampler/Sampling media | Pre-assembled cassette with mixed cellulose ester filter (MCEF) 0.8 micron (25 or 37 mm) [MAWP025A0 or MAWP037A0] | ||
| Sampling time* | |||
| Sampling volume (TWA)* | 2-100 L |
||
| Sampling flow rate (TWA)* | 1-3 L/min |
||
| Sampling volume (STEL/Peak/C)* | |||
| Sampling flow rate (STEL/Peak/C)* | |||
| Analytical method instruments | GC-FPD | ||
| Method reference | NIOSH 5037 (partially validated) | ||
| 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 |
0.1 mg/m³ |
REL-TWA |
0.1 mg/m³ |
TLV-TWA |
0.02 mg/m³ (inhalable fraction and vapor) [2015] |
PEL-TWA |
0.1 mg/m³ |
| PEL-STEL | REL-STEL | TLV-STEL | PEL-STEL | ||||
| PEL-C | REL-C | TLV-C | PEL-C | ||||
| Skin notation |
N |
Skin notation |
Y |
Skin notation |
Y |
Skin notation |
Y |
| Notes: | Notes: |
Notes:
BEI® |
Notes: | ||||
| Health factors: See NIH-NLM PubChem. | IDLH |
40 mg/m³ |
|||||
| Carcinogenic classifications: | Notes: | ||||||
| AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: | |||||||
Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Tricresyl phosphate NIOSH: Pocket Guide to Chemical Hazards - Triorthocresyl phosphate Literature References
|
Last Updated Date : 01/29/2021