PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Toluene diisocyanate (mixed isomers) | 26471-62-5 | 2078 |
6.00
14.01
4.01
11.01
14.02
7.01
11.00
4.06
4.07
2.00
|
|||||||||
| Formula | Synonyms | |||||||||||
| C9H6N2O2 | TOLUENE DIISOCYANATE, 1,3-DIISOCYANATOMETHYLBENZENE, BENZENE, 1,3-DIISOCYANATOMETHYL-, DESMODUR T100, DIISOCYANATOMETHYLBENZENE, DIISOCYANATOTOLUENE, HYLENE-T, ISOCYANIC ACID, METHYL PHENYLENE ESTER, ISOCYANIC ACID, METHYL-M-PHENYLENE ESTER, METHYL-M-PHENYLENE ISOCYANATE, METHYL-META-PHENYLENE DIISOCYANATE, METHYLPHENYLENE ISOCYANATE, MONDUR-TD, MONDUR-TD-80, NACCONATE-100, NIAX ISOCYANATE TDI, RCRA WASTE NUMBER U223, RUBINATE TDI, RUBINATE TDI 80/20, T 100, TDI, TDI 80/20, TDI-80, TDI-80-20, TOLUENE DIISOCYANATE (UNSPECIFIED ISOMER), TOLUENEDIISOCYANATE (MIXED ISOMERS), TOLYLENE DIISOCYANATE, TOLYLENE ISOCYANATE, UN 2078 | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 174.16 | L | 251 | 25 | 1.22 ± 0.01 | 9000 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.020 | 0.083 | 0.51 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.14 | 0.59 | 3.6 |
Technical Basis
Toluene diisocyanate (mixed isomers) is a complex of 2,4-toluene diisocyanate and toluene 2,6-toluene diisocyanate (80:20). A review of available sources did not identify acute toxicity data or exposure limits for this chemical. There are exposure limits for 2,4-toluene diisocyanate (CASRN: 584-84-9) and 2,6-toluene diisocyanate. These chemicals have similar exposure limits; however, 2,4-toluene diisocyanate is the primary component of this compound. As such, the AEGLs for 2,4-toluene diisocyanate were selected as the TEELs due to their priority among the emergency exposure limits (Section 1).
• TEEL-1 = AEGL-1 (Toluene-2,4-diisocyanate; (TDI), CASRN: 584-84-9)
• TEEL-2 = AEGL-2 (Toluene-2,4-diisocyanate; (TDI), CASRN: 584-84-9)
• TEEL-3 = AEGL-3 (Toluene-2,4-diisocyanate; (TDI), CASRN: 584-84-9)
This review generated TEEL values consistent with Rev. 29A*.
• TEEL-1 = AEGL-1 (Toluene-2,4-diisocyanate; (TDI), CASRN: 584-84-9)
• TEEL-2 = AEGL-2 (Toluene-2,4-diisocyanate; (TDI), CASRN: 584-84-9)
• TEEL-3 = AEGL-3 (Toluene-2,4-diisocyanate; (TDI), CASRN: 584-84-9)
This review generated TEEL values consistent with Rev. 29A*.
References
AEGLs (Toluene-2,4-diisocyanate, CASRN: 584-84-9). Retrieved from: https://www.epa.gov/aegl/24-toluene-diisocyanate-results-aegl-program
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/2_4-Diisocyanato-1-methylbenzene