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LN2217730

97% , 674-82-8

CAS NO.:674-82-8

Empirical Formula: C4H4O2

Molecular Weight: 84.07

MDL number: MFCD00005173

EINECS: 211-617-1

Update time: 2022-07-08

PRODUCT Properties

Melting point: -7.5°C
Boiling point: 69-70 °C100 mm Hg(lit.)
Density  1.09 g/mL at 25 °C(lit.)
vapor density  2.9 (vs air)
vapor pressure  7.9 mm Hg ( 20 °C)
refractive index  n20/D 1.439(lit.)
Flash point: 95 °F
storage temp.  2-8°C
CAS DataBase Reference 674-82-8(CAS DataBase Reference)
NIST Chemistry Reference 2-Oxetanone, 4-methylene-(674-82-8)
EPA Substance Registry System Diketene (674-82-8)

Description and Uses

Diketene is used as a reactant in the manufacture of paper and control of its sizing. In addition its used in the preparation of potent and selective inhibitor of histone methyltransferase EZH2 in the treatment of B-Cell lymphomas.

Safety

Symbol(GHS) 
GHS02,GHS06
Signal word  Danger
Hazard statements  H226-H302-H331
Precautionary statements  P261-P301+P312+P330-P304+P340+P312-P403+P233-P403+P235
Hazard Codes  Xn
Risk Statements  10-20-40-36/37/38
Safety Statements  3-36/37-33-24/25-23-16-26
RIDADR  UN 2929 6.1/PG 2
WGK Germany  2
RTECS  RQ8225000
19-21-27
HazardClass  6.1(a)
PackingGroup  I
Hazardous Substances Data 674-82-8(Hazardous Substances Data)
IDLA 7.6 ppm

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