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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Identification

Chemical structure
Display Name:
Hexamethyldisiloxane
EC Number:
203-492-7
EC Name:
Hexamethyldisiloxane
CAS Number:
107-46-0
Molecular formula:
C6H18OSi2
IUPAC Name:
trimethyl[(trimethylsilyl)oxy]silane

Type of Substance

Composition:
mono-constituent substance
Origin:
organic

Substance Identifiers open all close all

  • 203-492-7
  • 203-492-7
  • 107-46-0
  • BLUESIL FLD 41V0,65
  • DM 0.65 cSt
  • DOW CORNING(R) 2-1077 FLUID
  • DOW CORNING(R) 200 Fluid,0.65cst
  • DOW CORNING(R) ENDBLOCK B INT
  • Dimethicone 0.65 cSt
  • Hexamethyldisiloxane
  • Hexamethyldisiloxane
  • MIRASIL HMS
  • dimethylpolysiloxane
  • dimethylpolysiloxane-0.65cs
  • Compositions

    Boundary Composition(s) open all close all

    State Form:
    liquid


    Constituent 1
    Chemical structure
    Reference substance name:
    Hexamethyldisiloxane
    EC Number:
    203-492-7
    EC Name:
    Hexamethyldisiloxane
    CAS Number:
    107-46-0
    Molecular formula:
    C6H18OSi2
    IUPAC Name:
    trimethyl[(trimethylsilyl)oxy]silane
    State Form:
    liquid


    Constituent 1
    Chemical structure
    Reference substance name:
    Hexamethyldisiloxane
    EC Number:
    203-492-7
    EC Name:
    Hexamethyldisiloxane
    CAS Number:
    107-46-0
    Molecular formula:
    C6H18OSi2
    IUPAC Name:
    trimethyl[(trimethylsilyl)oxy]silane

    Legal Entity Composition(s) open all close all

    State Form:
    liquid


    Constituent 1
    Chemical structure
    Reference substance name:
    Hexamethyldisiloxane
    EC Number:
    203-492-7
    EC Name:
    Hexamethyldisiloxane
    CAS Number:
    107-46-0
    Molecular formula:
    C6H18OSi2
    IUPAC Name:
    trimethyl[(trimethylsilyl)oxy]silane
    State Form:
    liquid


    Constituent 1
    Chemical structure
    Reference substance name:
    Hexamethyldisiloxane
    EC Number:
    203-492-7
    EC Name:
    Hexamethyldisiloxane
    CAS Number:
    107-46-0
    Molecular formula:
    C6H18OSi2
    IUPAC Name:
    trimethyl[(trimethylsilyl)oxy]silane
    State Form:
    liquid


    Constituent 1
    Chemical structure
    Reference substance name:
    Hexamethyldisiloxane
    EC Number:
    203-492-7
    EC Name:
    Hexamethyldisiloxane
    CAS Number:
    107-46-0
    Molecular formula:
    C6H18OSi2
    IUPAC Name:
    trimethyl[(trimethylsilyl)oxy]silane
    State Form:
    liquid


    Constituent 1
    Chemical structure
    Reference substance name:
    Hexamethyldisiloxane
    EC Number:
    203-492-7
    EC Name:
    Hexamethyldisiloxane
    CAS Number:
    107-46-0
    Molecular formula:
    C6H18OSi2
    IUPAC Name:
    trimethyl[(trimethylsilyl)oxy]silane
    State Form:
    liquid


    Constituent 1
    Chemical structure
    Reference substance name:
    Hexamethyldisiloxane
    EC Number:
    203-492-7
    EC Name:
    Hexamethyldisiloxane
    CAS Number:
    107-46-0
    Molecular formula:
    C6H18OSi2
    IUPAC Name:
    trimethyl[(trimethylsilyl)oxy]silane
    State Form:
    liquid


    Constituent 1
    Chemical structure
    Reference substance name:
    Hexamethyldisiloxane
    EC Number:
    203-492-7
    EC Name:
    Hexamethyldisiloxane
    CAS Number:
    107-46-0
    Molecular formula:
    C6H18OSi2
    IUPAC Name:
    trimethyl[(trimethylsilyl)oxy]silane


    Constituent 1
    Chemical structure
    Reference substance name:
    Hexamethyldisiloxane
    EC Number:
    203-492-7
    EC Name:
    Hexamethyldisiloxane
    CAS Number:
    107-46-0
    Molecular formula:
    C6H18OSi2
    IUPAC Name:
    trimethyl[(trimethylsilyl)oxy]silane


    Constituent 1
    Chemical structure
    Reference substance name:
    Hexamethyldisiloxane
    EC Number:
    203-492-7
    EC Name:
    Hexamethyldisiloxane
    CAS Number:
    107-46-0
    Molecular formula:
    C6H18OSi2
    IUPAC Name:
    trimethyl[(trimethylsilyl)oxy]silane
    State Form:
    liquid


    Constituent 1
    Chemical structure
    Reference substance name:
    Hexamethyldisiloxane
    EC Number:
    203-492-7
    EC Name:
    Hexamethyldisiloxane
    CAS Number:
    107-46-0
    Molecular formula:
    C6H18OSi2
    IUPAC Name:
    trimethyl[(trimethylsilyl)oxy]silane
    State Form:
    liquid


    Constituent 1
    Chemical structure
    Reference substance name:
    Hexamethyldisiloxane
    EC Number:
    203-492-7
    EC Name:
    Hexamethyldisiloxane
    CAS Number:
    107-46-0
    Molecular formula:
    C6H18OSi2
    IUPAC Name:
    trimethyl[(trimethylsilyl)oxy]silane


    Constituent 1
    Chemical structure
    Reference substance name:
    Hexamethyldisiloxane
    EC Number:
    203-492-7
    EC Name:
    Hexamethyldisiloxane
    CAS Number:
    107-46-0
    Molecular formula:
    C6H18OSi2
    IUPAC Name:
    trimethyl[(trimethylsilyl)oxy]silane


    Constituent 1
    Chemical structure
    Reference substance name:
    Hexamethyldisiloxane
    EC Number:
    203-492-7
    EC Name:
    Hexamethyldisiloxane
    CAS Number:
    107-46-0
    Molecular formula:
    C6H18OSi2
    IUPAC Name:
    trimethyl[(trimethylsilyl)oxy]silane


    Constituent 1
    Chemical structure
    Reference substance name:
    Hexamethyldisiloxane
    EC Number:
    203-492-7
    EC Name:
    Hexamethyldisiloxane
    CAS Number:
    107-46-0
    Molecular formula:
    C6H18OSi2
    IUPAC Name:
    trimethyl[(trimethylsilyl)oxy]silane
    State Form:
    liquid
    Degree of purity:
    >= 90 % (w/w)


    Constituent 1
    Chemical structure
    Reference substance name:
    Hexamethyldisiloxane
    EC Number:
    203-492-7
    EC Name:
    Hexamethyldisiloxane
    CAS Number:
    107-46-0
    Molecular formula:
    C6H18OSi2
    IUPAC Name:
    trimethyl[(trimethylsilyl)oxy]silane
    Impurity 1
    Chemical structure
    Reference substance name:
    Dichloromethane
    EC Number:
    200-838-9
    EC Name:
    Dichloromethane
    CAS Number:
    75-09-2
    Molecular formula:
    CH2Cl2
    IUPAC Name:
    dichloromethane

    Composition(s) generated upon use

    Other types of composition(s)