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Product name: diketene; diketen; Ketenedimer, 99 %; Ketene Dimer; DK; Acetyl ketene; 4-Methylene-2-oxetanone; But-3-en-3-olide
CAS No .: 674-82-8
EINECS number: 211-617-1
Molecular formula:C4H4O2
Basic information Product Name: 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
Molecular weight 84.0744
Main quality index:
| Index name |
index |
| Appearance: |
Colorless or light yellow liquid, irritating odor |
| content: |
≥ 97.0% |
| Acetic anhydride: |
≤ 3% |
Physical and chemical properties nature: colorless, flammable liquid odor stimuli. The relative density of 1.0897 (20/20 ℃). Melting point of -7.5 ℃. boiling point 127.4 ℃. Refractive index nD (20 °C) 1.4379. Specific heat capacity 0.1990kJ/(kg • ℃). Flash point 34 ℃. Soluble in ordinary organic solvents. Chemical nature of lively. Layered in water.
Packaging and Storage: flammable materials, glass-lined or should be stored in an aluminum container, a low temperature (0 ~ 5 ℃) storage. Transport and fire, inorganic acid and water contact, is strictly prohibited to prevent explosion. According to the provisions of storage of flammable chemicals.
The main uses: as drug intermediates, food preservatives, pigments and modifiers
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