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3-Mercaptopropylmethyldimethoxysilane

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3-Mercaptopropylmethyldimethoxysilane Basic information
3-Mercaptopropylmethyldimethoxysilane Chemical Properties
  • Boiling point:96 °C/30 mmHg (lit.)
  • Density 1 g/mL at 25 °C (lit.)
  • refractive index n20/D 1.45(lit.)
  • Flash point:199°F
  • form Liquid
  • pka10.40±0.10(Predicted)
  • Specific Gravity1.0
  • color Colorless
  • Water Solubility Insoluble in water.
  • Sensitive Moisture Sensitive
  • Hydrolytic Sensitivity7: reacts slowly with moisture/water
  • BRN 2424867
  • CAS DataBase Reference31001-77-1(CAS DataBase Reference)
  • EPA Substance Registry System1-Propanethiol, 3-(dimethoxymethylsilyl)- (31001-77-1)
Safety Information
  • Hazard Codes Xi
  • Risk Statements 36/37/38
  • Safety Statements 26-36
  • RIDADR UN2924
  • WGK Germany 3
  • 10-23
  • TSCA Yes
  • HazardClass 3
  • PackingGroup III
  • HS Code 29319090
MSDS
3-Mercaptopropylmethyldimethoxysilane Usage And Synthesis
  • Introduction3-Mercaptopropylmethyldimethoxysilane is a bifunctional organosilane possessing a reactive organic mercapto and a hydrolyzable inorganic methoxysilyl group. 3-Mercaptopropylmethyldimethoxysilane is a clear, colorless to light yellow liquid with a slightly mercaptan odor. It is soluble in alcohols, ketones and aliphatic or aromatic hydrocarbons.

    Applications:
    • 3-Mercaptopropylmethyldimethoxysilane can be used as coupling agent to improve the adhesion of sulfur cured elastomers (polysulfide, polyurethane sealants) to inorganic fillers (such as silica, clay, glass, mica and talc etc.), fiberglass and surfaces. Mineral-reinforced articles such as shoe soles, rubber rollers and wheels, white sidewalls, and wire and cable insulation also can be produced with lower silane loadings.
    • Used to improve properties of mineral filled elastomer, including modulus, tensile and tear strength, heat buildup, abrasion resistance, resilience, compression set and cure time.
    • Used as a pretreatment on minerals or added at the time of compounding.
    • Used to improve low-rolling resistance in silica-reinforced tire tread compounds.
  • Chemical PropertiesClear to straw liquid with unpleasant odor of sulfide.
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