PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dibenzofuran | 132-64-9 |
15.01
11.01
15.02
5.00
|
||||||||||
| Formula | Synonyms | |||||||||||
| C12.H8.O | DIBENZOFURAN, 2,2^-BIPHENYLENE OXIDE, 2,2'-BIPHENYLYLENE OXIDE, DIBENZO[B,D]FURAN, DIPHENYLENE OXIDE, [1,1'-BIPHENYL]-2,2'-DIYL OXIDE | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 168.2 | S | 86.5 | 287 | 0.0044 | 25 | 1.0866 @ 99°C |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 30 | 330 | 2000 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 4.4 | 48 | 290 |
Technical Basis
A review of available sources did not identify exposure limits, acute toxicity data, or GHS health hazard ratings for dibenzofuran. The PNOS TLV-TWA was selected as the TEEL-1 basis (PNOS, Section 3.5.2). TEEL-3 and TEEL-2 values were derived according to Table 3.5.
• PAC-1 = TEEL-1 = PNOS TLV-TWA (10mg/m3) x 3
• PAC-2 = TEEL-2 = TEEL-1 x 11
• PAC-3 = TEEL-3 = TEEL-2 x 6
This review generated PAC values consistent with Rev. 29A*.
• PAC-1 = TEEL-1 = PNOS TLV-TWA (10mg/m3) x 3
• PAC-2 = TEEL-2 = TEEL-1 x 11
• PAC-3 = TEEL-3 = TEEL-2 x 6
This review generated PAC values consistent with Rev. 29A*.
References
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/Dibenzofuran