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isopentane

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Origin: China

Cas No: 78-78-4

Specification: 99%min

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  • Products Specification
  • Product Description
  • Property

    CAS No.: 78-78-4 Formula: C5H12 Molecular Weight: 72.14880

    Description

    Isopentane, C5H12, also called methylbutane or 2-methylbutane, is a branched-chain alkane with five carbon atoms. Isopentane is an extremely volatile and extremely flammable liquid at room temperature and pressure. The normal boiling point is just a few degrees above room temperature and isopentane will readily boil and evaporate away on a warm day. Isopentane is commonly used in conjunction with liquid nitrogen to achieve a liquid bath temperature of −160°C. It is 1% or less of natural gas.

    Basic Info

    Chemical Name isopentane
    Synonyms

    Isopentan;
    2-Methylbutane;
    Butane, 2-methyl-;
    Isoamylhydride;
    iso-pentane;
    iso-C5H12;
    2-methyl-butane;
    methylbutane;
    ISOPROPENTANE;
    2-methyl-butan;
    JJDW;
    1,1-dimethylpropane;

    CAS No. 78-78-4
    Molecular Formula C5H12
    Molecular Weight 72.14880
    PSA 0.00000
    LogP 2.05240

    Properties

    Appearance & Physical State colourless liquid with a characteristic smell
    Density 0.62
    Boiling Point 30ºC
    Melting Point -160ºC
    Flash Point -51ºC
    Refractive Index 1.353-1.55
    Stability Stable. Extremely flammable. Incompatible with strong oxidizing agents. Vapour-air mixtures explosive in certain proportions. Incompatible with rubber, various plastics. The vapour, being heavier than air, may roll over surfaces and collect in low points.
    Storage Condition 2-8ºC
    Vapor Density 2.6 (vs air)
    Vapor Pressure 11.17 psi ( 20 °C)

    Safety Info

    RTECS EK4430000
    Hazard Class 3
    Safety Statements S9-S16-S29-S33-S61-S62
    HS Code 2901100000
    Packing Group I
    WGK Germany 2
    RIDADR UN 1265
    Risk Statements R12; R51/53; R65; R66; R67
    Hazard Codes Xn
    Caution Statement P210; P261; P273; P301 + P310; P331
    Supplemental Hazard Statements Repeated exposure may cause skin dryness or cracking.
    Symbol GHS02, GHS07, GHS08, GHS09
    Signal Word Danger
    Hazard Declaration H224; H304; H336; H411

    Synthesis Route

    Methane, ion(2+)3,3-Dimethylpentane+2,2-Dimethylhexane
    2-Chloro-2-Methylbutane+Tetrapropylsilane3,3-DIMETHYLHEXANE+2,3-DIMETHYLHEXANE
    carbon monoxide+pentane2-Methyl-3-pentanone+isopentane

    Precursor

    dichloromethane
    propene
    2-methylbut-1-ene
    isoprene

    Downstream Product

    2,4-DIMETHYLPENTANE
    2-Methylhexane
    3,3-Dimethylpentane
    2,2-Dimethylhexane

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