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isoprene

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Origin: China

Cas No: 78-79-5

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 50 mt/month

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  • Products Specification
  • Product Description

  • Quick Details

    CAS No.:
    78-79-5
    Other Names:
    isoprene, isoprene
    MF:
    C5H8, C5H8
    EINECS No.:
    201-143-3
    Place of Origin:
    Shandong, China, Shandong, China
    Type:
    Pharmaceutical Intermediates, Pharmaceutical Intermediates, Isoprene
    Purity:
    99.5%, 99.5%
    Brand Name:
    ocean
    Model Number:
    78-79-5, TOP
    Application:
    isoprene, Coating Auxiliary Agents
    Appearance:
    white powder
    CAS No:
    78-79-5
    EINECS No:
    201-143-3
    Brand:
    Ocean

    Packaging&Delivery

    Packaging Details
    50Kg P.P Bags
    Port
    QINGDAO
    Lead Time:
    Quantity(Kilograms)1 - 100>100
    Est. Time(days)1To be negotiated

  • Property

    CAS No.: 78-79-5 Formula: C5H8 Molecular Weight: 68.11700

    Description

    Isoprene, or 2-methyl-1,3-butadiene, is a common organic compound with the formula CH2=C(CH3)-CH=CH2. In its pure form, it is a colorless volatile liquid. Isoprene is produced by many plants.

    Basic Info

    Chemical Name isoprene
    Synonyms

    2-methyl-buta-1,3-diene;
    decyclo-C5;
    2-methyl-1,3-butadiene;
    BUFFER ACETATE;
    3-methyl-1,2-butadiene;
    BUFFER PH7.20;
    Vita-crop;
    2-methylethene;
    Isopentadiene;
    Isoprene;
    1,3-Butadiene, 2-methyl-;

    CAS No. 78-79-5
    Molecular Formula C5H8
    Molecular Weight 68.11700
    PSA 0.00000
    LogP 1.74850

    Properties

    Appearance & Physical State colourless liquid with an aromatic odour
    Density 0.68
    Boiling Point 34ºC
    Melting Point -146ºC
    Freezing Point -145.96℃
    Flash Point -48ºC
    Refractive Index 1.4205-1.4225
    Water Solubility 0.07 g/100 mL
    Stability Stability Extremely flammable. Readily forms explosive mixtures with air. Note low flash point, low boiling point, high vapour pressure. Unstable - prone to spontaneous polymerization. May contain a polymerization inhibitor. Incompatible with strong oxidiz
    Storage Condition 2-8ºC
    Vapor Density 2.35 (vs air)
    Vapor Pressure 8.82 psi ( 20 °C)

    Safety Info

    RTECS NT4037000
    Hazard Class 3
    Safety Statements S45-S53-S61
    HS Code 4002601000
    WGK Germany 1
    Packing Group I
    RIDADR UN 1218
    Risk Statements R12; R45; R52/53; R68
    Hazard Codes F+; T
    Symbol GHS02, GHS08, GHS09
    Caution Statement P201; P210; P280; P308 + P313; P370 + P378; P403 + P235
    Hazard Declaration H224; H341; H350; H411
    Signal Word Danger

    Synthesis Route

    (Z)-3,4-dimethylpent-2-ene→propene+penta-2,3-diene
    2-Methyl-3-buten-2-ol→3-chloro-3-methylbut-1-ene+1-Chloro-3-Methyl-2-Butene
    3-chloro-3-methylbut-1-ene→1-Chloro-3-Methyl-2-Butene+isoprene

    GC Analysis

    Column type Active phase Temperature (°C) Retention Index (I) Temperature Control Method
    Capillary OV-1 27. 496. isothermal
    Capillary OV-1 30. 508. isothermal
    Capillary OV-1 75. 506. isothermal
    Packed Squalane 70. 499. isothermal
    Capillary Squalane 50. 497.5 isothermal

    Precursor

    2-Methyl-1-buten-3-yne
    6-O-allyl-1,2-O-isopropylidene-3-O-methallyl-5-O-prenyl-α-D-glucofuranose
    Formaldehyde
    prenol

    Downstream Product

    (1-acetyl-4-methylcyclohex-3-en-1-yl) 4-nitrobenzoate
    3-(bromomethyl)-2,2-dimethyloxirane
    1-Acetyl-3-methyl-3-cyclohexen-1-yl p-nitrobenzoate
    1-(1,4,6-trimethylcyclohex-3-en-1-yl)ethanone

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