Diketene

CAS No. 674-82-8

Formula: C4H4O2
Basic Info

Diketene is an organic compound with the formula (CH2CO)2. It is formed by dimerization of ketene (IUPAC name: ethenone). Diketene is a member of the oxetane family. It is used as a reagent in organic chemistry. It is a colorless liquid.

Formula
C4H4O2
Molecular Weight
84.0734
Exact Mass
84.0211
LogP
0.447
PSA
26.3
Synonyms

ACETYLKETENE

Diketene(DK)

ethenone,dimer

4-methylene-2-oxetanone

Dikitene

2-Oxetanone, 4-methylene-

But-1-ene-1,3-dione

diketene dimer

Ketenedimere

Diketen

DIKETENE

4-methyleneoxetan-2-one

KETENE DIMER

Acetyl ketene

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Properties
Appearance & Physical State
COLOURLESS LIQUID
Density
1.1
Boiling Point
127.4ºC
Melting Point
-7.5ºC
Flash Point
34
Refractive Index
1.439
Stability
Readily polymerizes on standing.
Storage Condition
2-8ºC
Vapor Density
2.9 (vs air)
Vapor Pressure
7.9 mm Hg ( 20 °C)
Safety Info
RTECS
RQ8225000
Safety Statements
S3
WGK Germany
2
Risk Statements
R10; R20
RIDADR
UN 2521
Hazard Class
6.1(a)
Packing Group
I
Hazard Codes
Spectrum
NMR Spectrum 1H NMR : parameter in CDCl3
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IR Spectrum IR : liquid film
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Mass Spectrum Mass spectrum (electron ionization)
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Related Compound Information

PRODUCTS
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SUPPLIERS
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BRANDING
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