PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Diketene; (Ketene dimer) 674-82-8 2521
11.01
14.01
15.02
11.00
4.01
4.07
4.11
Formula Synonyms
C4H4O2 DIKETENE, INHIBITED, 3-BUTENOIC ACID, 3-HYDROXY-, BETA-LACTONE, 4-METHYLENE-2-OXETANONE, DICÉTÈNE, STABILISÉ (DOT FRENCH), DICETENO, INHIBIDO (DOT SPANISH), DIKETENE, ETHENONE, DIMER, KETENE DIMER
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
84.07 L -6.5 126.1 7.5 19.3 1.0877 @ 20°C
PAC Values
PAC Values (Original Units: ppm)
PAC-1 PAC-2 PAC-3
0.091 1ₐ 3ₐ
Converted PAC Values (mg/m3)
PAC-1 PAC-2 PAC-3
0.31 3.4 10
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.