TERPHENYLS (O-, M-, P- ISOMERS)†
| CAS # | 26140-60-3 |
|---|---|
| Formula |
C₆H₅C₆H₄C₆H₅ |
| Synonyms |
o(m or p)-diphenylbenzene; 1,2(3 or 4)-diphenylbenzene; 2(3 or 4)-phenylbiphenyl; 1,2(3 or 4)-Terphenyl; o(m or p)-terphenyl; o(m or p)-triphenyl |
| Physical description | Colorless or light-yellow solid. | ||
|---|---|---|---|
| Boiling point | 630°F | Molecular weight | 230.3 |
| Freezing point/melting point | Vapor pressure | 0.01 mmHg at 200°F for M-, 0.09 mmHg at 200°F for O-, very low for P- | |
| Flash point | 325-405°F (open cup) | Vapor density | |
| Specific gravity | 1.1-1.23 | Ionization potential | 7.78-8.01 eV |
| 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.) | |||
|---|---|---|---|
| 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 | TLV-TWA | PEL-TWA | ||||
| PEL-STEL | REL-STEL | TLV-STEL | PEL-STEL | ||||
| PEL-C |
1 ppm (9 mg/m³) |
REL-C |
0.5 ppm (5 mg/m³) |
TLV-C |
5 mg/m³ [1977] |
PEL-C |
0.5 ppm (5 mg/m³) |
| Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
| Notes: | Notes: | Notes: | Notes: | ||||
| Health factors: See NIH-NLM PubChem. | IDLH |
500 mg/m³ |
|||||
| Carcinogenic classifications: Not listed | Notes: | ||||||
| AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: | |||||||
Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - O-Terphenyl NIOSH: Pocket Guide to Chemical Hazards - o-Terphenyl Literature References
|
Last Updated Date : 01/28/2021