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674-82-8 diketene

product Name diketene
CAS No 674-82-8
Synonyms diketen; Ketenedimer,99%; Ketene Dimer; DK; Acetyl ketene; 4-Methylene-2-oxetanone; But-3-en-3-olide; 4-methylideneoxetan-2-one; but-1-ene-1,3-dione; Acetylketene diketene
Molecular Formula C4H4O2
Molecular Weight 84.0734
InChI InChI=1/C4H4O2/c1-4(6)2-3-5/h2H,1H3
EINECS 211-617-1
Molecular Structure 674-82-8 diketene
Density 0.959g/cm3
Melting point -7.5℃
Boiling point 106.6°C at 760 mmHg
Refractive index 1.39
Flash point 16.8°C
Vapour Pressur 28mmHg at 25°C
Hazard Symbols  Xn:Harmful;
Risk Codes R10:;
R20:;
Safety Description S3:;

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