PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cyclohexyl isocyanate | 3173-53-3 |
14.01
14.02
11.01
9.00
|
||||||||||
| Formula | Synonyms | |||||||||||
| C7.H11.N.O | ||||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 125.19 | S |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.0031 | 0.034 | 0.10 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.016 | 0.17 | 0.51 |
Technical Basis
A review of available sources identified AEGL-3 and AEGL-2 exposure limits for this chemical. The available AEGLs were selected as the TEEL-3 and TEEL-2 due to their priority among the emergency exposure limits (Section 1). Due to insufficient data, an AEGL-1 does not exist for this chemical, therefore the TEEL-1 was derived according to Table 3.5.
• TEEL-1 = TEEL-2/11
• TEEL-2 = AEGL-2
• TEEL-3 = AEGL-3
This review generated TEEL ppm values that are consistent with Rev. 29A*. There is a minor difference in the TEEL-1 value in units mg/m3 for TEEL-1, which is attributed to rounding.
• TEEL-1 = TEEL-2/11
• TEEL-2 = AEGL-2
• TEEL-3 = AEGL-3
This review generated TEEL ppm values that are consistent with Rev. 29A*. There is a minor difference in the TEEL-1 value in units mg/m3 for TEEL-1, which is attributed to rounding.
References
https://www.epa.gov/aegl/cyclohexyl-isocyanate-results-aegl-program
https://pubchem.ncbi.nlm.nih.gov/compound/Cyclohexyl-isocyanate