PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Trichlorobenzene, 1,2,4- | 120-82-1 | 2321 |
15.01
11.01
15.02
4.05
8.00
7.00
11.00
4.09
4.10
4.07
|
|||||||||
| Formula | Synonyms | |||||||||||
| C6H3Cl3 | 1,2,4-TRICHLOROBENZENE, 1,2,4-TRICHLOROBENZOL, 1,2,5-TRICHLOROBENZENE, 1,3,4-TRICHLOROBENZENE, BENZENE, 1,2,4-TRICHLORO-, HOSTETEX L-PEC, UN 2321, UNSYM-TRICHLOROBENZENE | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 181.45 | L or S | 16.92 | 213.5 | 0.46 | 25 | 1.459 | 25000 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 3.4 | 37 | 150 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.46 | 5.0 | 20 |
Technical Basis
A review of available sources identified the following: exposure limits (REL-C, PEL-C, TLV-C) and LD50 acute toxicity data (mouse, rat). Data sources were selected according to the hierarchy listed in Table 3.1. Toxicity data were selected according to type of exposure, species, and route according to the hierarchies stated in Sections 3.3.1, 3.3.2, and evaluated using factors in Tables 3.2, 3.3, and 3.4. The most preferred route and species, a rat oral LD50, was selected as the TEEL-3. The TLV-C was selected as the TEEL-2. The TEEL-1 was derived according to Table 3.5.
• TEEL-1 = TEEL-2/11
• TEEL-2 = TLV-C (5 ppm)
• TEEL-3 = Rat oral LD50 (756 mg/kg)
This review generated TEEL values that are consistent with Rev 29A.
• TEEL-1 = TEEL-2/11
• TEEL-2 = TLV-C (5 ppm)
• TEEL-3 = Rat oral LD50 (756 mg/kg)
This review generated TEEL values that are consistent with Rev 29A.
References
https://www.osha.gov/chemicaldata/161
Annals of Occupational Hygiene., 12(209), 1969. Retrieved from: https://pubchem.ncbi.nlm.nih.gov/compound/1_2_4-Trichlorobenzene