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Dodecamethylcyclohexasiloxane

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Origin: China

Cas No: 540-97-6

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 80 mt/month

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

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  • Products Specification
  • Product Description

  • Property

    CAS No.: 540-97-6 Formula: C12H36O6Si6 Molecular Weight: 444.92400

    Description

    A cyclic volatile methylsiloxane (cVMS) used in cosmetic and personal care products. Used in dermal exposure and inhalation toxicity study.

    Basic Info

    Chemical Name Dodecamethylcyclohexasiloxane
    Synonyms

    Cyclohexasiloxane, dodecamethyl-;
    DodecaMethylcyclohexasiloxane;

    CAS No. 540-97-6
    Molecular Formula C12H36O6Si6
    Molecular Weight 444.92400
    PSA 55.38000
    LogP 4.31040

    Properties

    Density 0.95
    Boiling Point 245ºC at 760 mmHg
    Melting Point -3ºC
    Flash Point 124.4ºC
    Refractive Index 1.43

    Safety Info

    RTECS GW2328550
    Safety Statements 26-36/37/39
    Risk Statements R36/37/38

    Synthesis Route

    Dichlorodimethylsilane→2,2,4,4,6,6,8,8,10,10,12,12,14,14-tetradecamethyl-1,3,5,7,9,11,13-heptaoxa-2,4,6,8,10,12,14-heptasilacyclotetradecane+Hexamethylcyclotrisiloxane
    1,3-DI-N-OCTYLTETRAMETHYLDISILOXANE→2,2,4,4,6,6,8,8,10,10,12,12,14,14-tetradecamethyl-1,3,5,7,9,11,13-heptaoxa-2,4,6,8,10,12,14-heptasilacyclotetradecane+Hexamethylcyclotrisiloxane
    bromomethane+Dimethyl ether→2,2,4,4,6,6,8,8,10,10,12,12,14,14-tetradecamethyl-1,3,5,7,9,11,13-heptaoxa-2,4,6,8,10,12,14-heptasilacyclotetradecane+Hexamethylcyclotrisiloxane

    GC Analysis

    Column type Active phase Temperature (°C) Retention Index (I) Temperature Control Method
    Capillary Ultra-1 - 1342. temperature ramp
    Capillary VF-5MS - 1349.9 custom temperature program
    Packed SE-30 110. 1351. isothermal
    Packed SE-30 125. 1346. isothermal
    Capillary SP-2100 - 1341. temperature ramp

    Precursor

    bromomethane
    1,1,2,2,3,3,4,4,5,5,6,6-dodecamethylhexasilinane
    Dichlorodimethylsilane
    1,3-DI-N-OCTYLTETRAMETHYLDISILOXANE

    Downstream Product

    2,2,4,4,6,6,8,8,10,10,12,12,14,14-tetradecamethyl-1,3,5,7,9,11,13-heptaoxa-2,4,6,8,10,12,14-heptasilacyclotetradecane
    iododimethylsilane
    2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16-hexadecamethyl-1,3,5,7,9,11,13,15-octaoxa-2,4,6,8,10,12,14,16-octasilacyclohexadecane

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