All structures are computer generated. Please rely on the product data below for placing your order. If you see any errors in structures, please email customer service so that they can be addressed.


Product Code: SIM6520.1

Cas No: 75-79-6

500 g
25 g
20 kg
Contact Us For Pricing
220 kg
Contact Us For Pricing

Product data and descriptions listed are typical values, not intended to be used as specification.

Alkyl Silane - Conventional Surface Bonding

Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.

Methyltrichlorosilane; Trichloromethylsilane; Trichlorosilylmethane
  • Viscosity: 0.46 cSt
  • ΔHvap: 31.0 kJ/mol
  • Surface tension: 20.3 mN/m
  • Ionization potential: 11.36 eV
  • Specific heat: 0.92 J/g/°
  • Vapor pressure, 13.5 °C: 100 mm
  • Critical temperature: 243 °C
  • Critical pressure: 39 atm
  • Coefficient of thermal expansion: 1.3 x 10-3
  • Fundamental builing-block for silicone resins
  • Forms silicon carbide by pyrolysis
  • In a synergistic fashion with boron trifluoride etherate catalyzes the crossed imino aldehyde pinacol coupling
  • In combination with H2 forms SiC by CVD
  • Standard grade available, SIM6520.0
  • EINECS Number: 200-902-6

    Specific Gravity: 1.275

    Flashpoint: -15

    HMIS Key: 3-4-2-X

    Hydrolytic Sensitivity: 8: reacts rapidly with moisture, water, protic solvents

    Formula: CH3Cl3Si

    Purity: 98%


    Refractive Index: 1.4110

    Application: In combination with H2 forms SiC by CVD.1

    Reference: 1. Josiek, A. et al. Chem. Vap. Dep. 1996, 2, 17.

    Additional Properties: 395
    Ionization potential: 11.36 eV
    Surface tension: 20.3 mN/m
    39 atm
    ?Hvap: 7.4 kcal/mole
    Specific heat: 0.22 cal/g/°
    Coefficient of thermal expansion: 1.3 x 10-3
    Fundamental builing-block for silicone resins