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Diketene

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Origin: China

Cas No: 674-82-8

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 100 mt/month

Lead time: 7 days for OEM, 3 days for ready goods

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  • Products Specification
  • Product Description

  • Quick Details

    CAS No.:
    674-82-8
    Other Names:
    Acetyl ketene
    MF:
    C4H4O2
    EINECS No.:
    211-617-1
    Place of Origin:
    Shanghai, China
    Grade Standard:
    Agriculture Grade, Electron Grade, Food Grade, Industrial Grade, Medicine Grade, Reagent Grade
    Purity:
    99%min
    Appearance:
    Liquid
    Application:
    Medicine
    Brand Name:
    Terppon
    Model Number:
    1662
    Package:
    200kg/drum

    Packaging&Delivery

    Packaging Details
    DRUMS
    Port
    SHANGHAI
    Lead Time:
    Quantity(Kilograms)1 - 1>1
    Est. Time(days)20To be negotiated

  • Property

    CAS No.: 674-82-8 Formula: C4H4O2 Molecular Weight: 84.07340

    Description

    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.

    Basic Info

    Chemical Name Diketene
    Synonyms

    Acetyl ketene;
    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;

    CAS No. 674-82-8
    Molecular Formula C4H4O2
    Molecular Weight 84.07340
    PSA 26.30000
    LogP 0.44700

    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
    Hazard Class 6.1(a)
    Safety Statements S3
    WGK Germany 2
    Packing Group I
    RIDADR UN 2521
    Risk Statements R10; R20
    Hazard Codes Xn

    Synthesis Route

    ethenone+acetaldehyde→Diketene+β-BUTYROLACTONE
    4'-Methoxyacetoacetanilide→Diketene+p-Anisidine
    N-(4-bromophenyl)-3-oxobutanamide→Diketene+4-Bromoaniline

    Precursor

    acetone
    dichloromethane
    1-carbazol-9-ylethanone
    ethenone

    Downstream Product

    3-methyl-1,1-dioxo-6-phenyl-2H-1,2,6-thiadiazin-5-one
    N-acetoacetyl-N'-phenylsulfamide
    N-butyl-3-oxobutanamide
    3-Oxo-N-(3-phenylpropyl)butanamide

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