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Acetyl ketene

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Acetyl ketene Basic information

Product Name:
Acetyl ketene
CAS:
674-82-8
MF:
C4H4O2
MW:
84.07
EINECS:
211-617-1
Mol File:
674-82-8.mol
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Acetyl ketene Chemical 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)
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Safety Information

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)

MSDS

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Acetyl ketene Usage And Synthesis

General Description

A colorless liquid with a disagreeable odor. Slightly less dense than water. Flash point 90°F. Irritates skin and eyes. Used to make paints and pharmaceuticals.

Air & Water Reactions

Highly flammable. Slightly soluble in water.

Reactivity Profile

DIKETENE is a very reactive dimer, Acetyl ketene may undergo a spontaneous decomposition followed by explosion or ignition [Vervalin, 1973, p.86]. In the presence of bases, amines, mineral acids or Lewis acids a violent polymerization will occur, accompanied by gas evolution [Zdenek, F. et al., Czech Pat. 156 584, 1975].

Health Hazard

TOXIC; may be fatal if inhaled, ingested or absorbed through skin. Inhalation or contact with some of these materials will irritate or burn skin and eyes. Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.

Fire Hazard

HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion and poison hazard indoors, outdoors or in sewers. May polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.

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Ningbo wanglong technology co. LTD Gold
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Shanghai Yolne Chemical Co., Ltd. Gold
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Shijiazhuang XinZhaoYang Chemical Technology Co., Ltd. Gold
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0311-69032540 13931172911
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2636239065@qq.com
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