674-82-8 Acetyl ketene

Name: Acetyl ketene
Synonyms: 3-Butenoicacid, 3-hydroxy-, b-lactone (6CI,7CI);4-Methylene-2-oxetanone;Diketene;Ethenone, dimer;Ketene dimer;NSC 93783;
CAS Number:674-82-8
Molecular Formula:C₄H₄O₂
Molecular Weight:84.08
EINECS:211-617-1
Density:1.10
Boiling Point:127.4 ºC
Flash Point:34 ºF
Safety Description:Moderately toxic by ingestion and skin contact. A skin and severe eye irritant. Flammable when exposed to heat or flame; can react vigorously with oxidizing materials. A violent polymerization reaction is catalyzed by acids, bases, or sodium acetate. A storage hazard. Self-initiated exothermic dimerization is explosive. To fight fire, use alcohol foam. When heated to decomposition it emits acrid smoke and fumes.
liansport Information:UN 2521