PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ketene; (Carbomethene, Ethenone) | 463-51-4 |
15.01
4.01
11.01
15.02
4.08
4.05
7.01
8.00
11.00
4.07
|
||||||||||
| Formula | Synonyms | |||||||||||
| C2H2O | ||||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 42.04 | G | -151 | -49.8 | 750 | -50 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.0057 | 0.063 | 0.19 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.0098 | 0.11 | 0.33 |
Technical Basis
A review of available sources identified AEGL-2 and AEGL-3 exposure limits for this chemical. The AEGLs were selected as the TEELs due to their priority among the emergency exposure limits (Section 1). An AEGL-1 is not recommended for this chemical and 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 values that are consistent with Rev. 29A*.
• TEEL-1 = TEEL-2/11
• TEEL-2 = AEGL-2
• TEEL-3 = AEGL-3
This review generated TEEL values that are consistent with Rev. 29A*.
References
https://www.epa.gov/aegl/ketene-results-aegl-program