PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Benzoquinone, p-; (Quinone) | 106-51-4 | 2587 |
14.01
4.01
11.01
14.02
4.08
4.05
7.01
8.00
7.00
11.00
|
|||||||||
| Formula | Synonyms | |||||||||||
| C6H4O2 | BENZOQUINONE, 1,4-BENZOQUINE, 1,4-BENZOQUINONE, 1,4-CYCLOHEXADIENE DIOXIDE, 1,4-CYCLOHEXADIENEDIONE, 1,4-DIOXYBENZENE, 2,5-CYCLOHEXADIENE-1,4-DIONE, BENZOQUINONA (DOT SPANISH), BENZOQUINONE (DOT FRENCH), CHINONE, CYCLOHEXADIENEDIONE, NCI-C55845, P-BENZOQUINONE, P-QUINONE, PBQ 2, QUINONE, STEARA PBQ, USAF P-220 | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 108.1 | S | 115 | 17.8 | 1.318 @ 20°C |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 1.2 | 50 | 300 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.27 | 11 | 68 |
Technical Basis
A review of available sources identified a PEL-TWA and IDLH. Data sources were selected according to the hierarchy listed in Table 3.1. The IDLH was selected as the TEEL-3. A TEEL-2 was derived according to Table 3.5. The PEL-TWA was selected as the TEEL-1 basis. • TEEL-1 = PEL-TWA x 3 (0.4 mg/m3) • TEEL-2 = TEEL-3/6 • TEEL-3 = IDLH (1990, 300 mg/m3) This review generated TEEL values consistent with those in Rev. 29A. Minor differences in TEEL-1 values may be attributed to rounding, due to conversion of Rev. 29A values from ppm to mg/ m3.
References
https://www.cdc.gov/niosh/idlh/106514.html