3-Mercaptopropylmethyldimethoxysilane

3-Mercaptopropylmethyldimethoxysilane Basic information
Introduction
Product Name:3-Mercaptopropylmethyldimethoxysilane
Synonyms:3-(dimethoxymethylsilyl)-1-propanethio;gamma-mercaptopropylmethyldimethoxysilane;3-thiopropylMethyldiMethoxysilane;KBM-802;HD-105;3-(Dimethoxymethylsilyl)-1-propanethiol 3-Mercaptopropylmethyldimethoxysilane;(3-Mercaptopropyl)methyldimethoxysilane >=95.0%;γ-thiopropylmethyldimethoxyl silane
CAS:31001-77-1
MF:C6H16O2SSi
MW:180.34
EINECS:250-426-8
Product Categories:Adhesion Promoters;Coupling Agents;Industrial/Fine Chemicals;Dialkoxysilanes;Mecapto Silanes;Surface Modifiers;Si (Classes of Silicon Compounds);Si-O Compounds
Mol File:31001-77-1.mol
3-Mercaptopropylmethyldimethoxysilane Structure
3-Mercaptopropylmethyldimethoxysilane Chemical Properties
Boiling point 96 °C/30 mmHg (lit.)
density 1 g/mL at 25 °C (lit.)
vapor pressure 23-12790Pa at 20-25℃
refractive index n20/D 1.45(lit.)
Fp 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
LogP-0.82-2.9 at 20℃
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 Information
ProviderLanguage
SigmaAldrich English
ALFA English
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.
Uses3-Mercaptopropylmethyldimethoxysilane can be used to prepare UV laminated adhesive.
Uses(3-Mercaptopropyl)methyldimethoxysilane (MPMDMS) can be used as a silane precursor in the synthesis of:
  • Nafion-MPMDMS nanocomposite membranes by sol-gel method.
  • MPMDMS functionalized magnetic- polysilsesquioxane (PSSQ) nanoparticles applicable for heavy metal ions adsorption.
  • Thiol-organosilica nanoparticles.

Flammability and ExplosibilityNotclassified
3-Mercaptopropylmethyldimethoxysilane Preparation Products And Raw materials
Raw materials3-Chloropropylmethyldimethoxysilane
Vinyltrimethoxysilane dimethoxymethylpropyl-Silane Trimethoxypropylsilane Triethoxyvinylsilane Dimethoxymethylphenylsilane Dimethyldimethoxysilane Methyltriethoxysilane Tetraethyl orthosilicate Trimethoxysilane Silicon METHYLSILANE Trimethoxysilylpropanethiol Tetramethyl orthosilicate 1-Propanethiol 3-Aminopropyltrimethoxysilane 3-Mercaptopropylmethyldimethoxysilane 3-Chloropropyltrimethoxysilane Methyldimethoxysilane

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