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 Values (Original Units: ppm)
PAC-1 PAC-2 PAC-3
0.0057 0.063ₐ 0.19ₐ
Converted PAC Values (mg/m3)
PAC-1 PAC-2 PAC-3
0.0098 0.11 0.33
Technical Basis
No technical basis available
References
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PAC values marked with a subscript "A" correspond to 60-minute AEGL values.
PAC values marked with a subscript "E" correspond to ERPG values.
PAC values marked by * are >= 10% lower explosive limit (LEL) but < 50% LEL.
PAC values marked by ** are > 50% LEL but < 100% LEL.
PAC values marked by *** are >= LEL.