Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Domestic KH590 LT590 Gamma-Mercaptopropyltrimethoxysilane

Domestic KH590 LT590 Gamma-Mercaptopropyltrimethoxysilane is a high-purity organosilane coupling agent from Domestic’s KH-series, model LT590, featuring reactive thiol (–SH) and hydrolyzable methoxy groups for enhanced adhesion between inorganic substrates and organic polymers in rubber, adhesive, and coating applications.
  • domestic kh590 lt590 gamma mercaptopropyltrimethoxysilane_fb6f719d
  • domestic kh590 lt590 gamma mercaptopropyltrimethoxysilane_fb6f719d

Features Of Domestic KH590 LT590 Gamma-Mercaptopropyltrimethoxysilane

  1. High-purity domestic alternative to imported gamma-mercaptopropyltrimethoxysilane, ensuring consistent coupling performance.

  2. Reactive thiol (–SH) group enables strong covalent bonding with metals, sulfur-cured elastomers, and inorganic fillers.

  3. Three hydrolyzable methoxy (–OCH₃) groups provide excellent crosslinking density and rapid silanol formation under mild moisture conditions.

  4. Enhanced shelf stability compared to ethoxy analogues, with reduced volatility and improved handling safety.

  5. Optimized for ambient-temperature silanization processes—no catalyst or elevated temperature required for effective surface modification.

Typical Applications Of Domestic KH590 LT590 Gamma-Mercaptopropyltrimethoxysilane

  1. Silane coupling agent for silica- and carbon black-filled rubber compounds, especially in high-performance tires and industrial hoses.

  2. Surface modifier for metal oxides (e.g., ZnO, Fe₃O₄) in conductive composites and electromagnetic shielding materials.

  3. Adhesion promoter in epoxy, polyurethane, and silicone sealants used for metal-to-polymer bonding in automotive assemblies.

  4. Functionalization reagent for gold nanoparticles and quantum dots in biosensor and diagnostic assay development.

Specifications Of Domestic KH590 LT590 Gamma-Mercaptopropyltrimethoxysilane

Chemical TypeOrganofunctional alkoxysilane
Chemical Name3-Mercaptopropyltrimethoxysilane
Product FormClear, colorless to pale yellow liquid
AppearanceHomogeneous liquid, free from visible particulates or phase separation
Specific Gravity (25°C)1.045–1.065 g/cm³
Refractive Index (20°C)1.422–1.430
Thiol Content (as –SH)7.8–8.2 wt%
Storage ConditionSealed container, under nitrogen, at 2–25°C, protected from moisture and direct sunlight


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