PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diphenyl; (Biphenyl) | 92-52-4 | 8027 |
15.01
11.01
14.02
7.01
8.00
7.00
11.00
4.10
4.07
3.08
|
|||||||||
| Formula | Synonyms | |||||||||||
| C12H10 | BIPHENYL, 1,1^-BIPHENYL, 1,1'-DIPHENYL, BIBENZENE, BIPHENYL, BIBENZENE, CAROLID AL, CAROLID AL, PHENADOR-X, DIPHENYL, LEMONENE, LEMONENE, PHPH, PHENADOR-X, PHENYL BENZENE, PHENYLBENZENE, PHPH, TETROSIN LY, TETROSIN LY, XENENE, XENENE | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 154.21 | S | 68.93 | 256.1 | 0.75 | 69 | 1.04 @ 20°C | 6000 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.87 | 9.6 | 48 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 5.5 | 61 | 300 |
Technical Basis
A review of available sources identified exposure limits (AEGL-2, IDLH, TWAs) for this chemical. The 1990 IDLH was selected as TEEL-3. The AEGL-2 was selected as the TEEL-2 due to its priority among the emergency exposure limits (Section 1). Due to insufficient data, an AEGL-1 does not exist for this chemical; therefore, TEEL-1 values were derived according to Table 3.5.
• TEEL-1 = TEEL-2/11
• TEEL-2 = AEGL-2
• TEEL-3 = IDLH (1990, 300 mg/m3)
This review generated TEEL-2 and TEEL-1 values consistent with Rev. 29A. The Rev. 29A and current TEEL-3 basis are consistent, the 1990 IDLH; however, Rev. 29A reports the value in incorrect units (300 ppm), instead of the published 300 mg/m3.
• TEEL-1 = TEEL-2/11
• TEEL-2 = AEGL-2
• TEEL-3 = IDLH (1990, 300 mg/m3)
This review generated TEEL-2 and TEEL-1 values consistent with Rev. 29A. The Rev. 29A and current TEEL-3 basis are consistent, the 1990 IDLH; however, Rev. 29A reports the value in incorrect units (300 ppm), instead of the published 300 mg/m3.
References
AEGL-2 and chemical information (Table 1, pg. 8) retrieved from: https://www.epa.gov/aegl/biphenyl-results-aegl-program
IDLH: https://www.cdc.gov/niosh/idlh/92524.html