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CAS 4420-74-0

(3-Mercaptopropyl)trimethoxysilane

Chemical Name: (3-Mercaptopropyl)trimethoxysilane
Product Category: Mercapto silanes | Silane Coupling Agent
Structural Formula: 4420-74-0
CAS No.: 4420-74-0
EINECS: 224-221-9
Molecular Formula: C₆H₁₆O₃SSi
Molecular Weight: 196.34 g/mol
Appearance: Clear, colorless to light yellow liquid with a mild mercaptan odor

(3-Mercaptopropyl)trimethoxysilane Description

(3-Mercaptopropyl)trimethoxysilane (CAS 4420-74-0) is a highly effective silane coupling agent used in various industries, including rubber, polymer modification, metal treatment, and nanotechnology. Its superior adhesion properties and surface treatment capabilities make it ideal for enhancing material performance and durability.

Chemical Name(3-Mercaptopropyl)trimethoxysilane
Synonymsγ-Mercaptopropyltrimethoxysilane, 3-Mercaptopropyltrimethoxysilane
Boiling Point212°C at 760 mmHg
Density1.057 g/mL at 25°C
Flash Point88°C
Refractive Index1.440 at 25°C
SolubilityReacts with water, soluble in alcohol, acetone, benzene, toluene
Applications
  • Silane Coupling Agent: Enhances adhesion between inorganic fillers (silica, glass, metals) and sulfur-cured polymers, improving strength and durability.

  • Rubber Industry: Used to modify mineral fillers in elastomers (e.g., NR, SBR, EPDM) to enhance tensile strength, abrasion resistance, and weathering properties.

  • Surface Treatment: Acts as a rust inhibitor and improves corrosion resistance for metals like gold, silver, and copper.

  • Polymer Modification: Enhances the bonding of thermoplastics and thermosets with inorganic materials, improving chemical resistance and mechanical properties.

  • Nanotechnology: Capping agent in the synthesis of nanoparticles and carbon nanotubes for advanced material applications.

Safety Information
  • Hazard Symbols: Harmful (Xn), Dangerous for the Environment (N)

  • Risk Phrases: R22 (Harmful if swallowed), R43 (May cause skin sensitization), R51/53 (Toxic to aquatic life, long-term effects)

  • Storage: Store in a sealed container, away from moisture, at 2-8°C

  • Handling: Use personal protective equipment (PPE), such as gloves and goggles

Packaging
  • Our standard packing is net 25kg / 200 kg drums / 1000kg/IBC,or according to your requirements.
Sample
  • Provided for free
Inventory items
  • 3 tons
Price

Packaging Specifications

Packaging Specifications

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(3-Mercaptopropyl)trimethoxysilane: Guide

(3-Mercaptopropyl)trimethoxysilane is a versatile organosilane widely used for surface modification, nanomaterial synthesis, and adhesion promotion. Its unique chemical properties make it valuable in enhancing material performance across various industries.

Applications:

  • Surface Modification: Enhances metal and silica bonding.

  • Nanomaterial Synthesis: Used in functionalized nanoparticles.

  • Adhesion Promoter: Improves rubber and coating performance.

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