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Colorless Silane Coupling Agent KH-590 3 Mercaptopropyl Trimethoxysilane CAS NO 4420 74 0

Colorless Silane Coupling Agent KH-590 3 Mercaptopropyl Trimethoxysilane CAS NO 4420 74 0

    • Colorless Silane Coupling Agent KH-590 3 Mercaptopropyl Trimethoxysilane CAS NO 4420 74 0
  • Colorless Silane Coupling Agent KH-590 3 Mercaptopropyl Trimethoxysilane CAS NO 4420 74 0

    Product Details:

    Place of Origin: CHINA
    Brand Name: LYRIN
    Certification: SGS
    Model Number: kh-590

    Payment & Shipping Terms:

    Minimum Order Quantity: Negotiation
    Price: Negotiation
    Packaging Details: 5L/Drum,20L/Drum,200L/Drum,1Mt/IBC drum
    Delivery Time: 10-15 DAYS
    Supply Ability: 300 MT MONTH
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    Detailed Product Description
    CAS No: 4420-74-0 EINECS No: 238-883-1
    Appearance: Colorless To Light Yellow Clear Liquid. MF: HS(CH2)3Si(OCH3)3
    Usage: Rubber Auxiliary Agents, Composite Material Type: Silane
    High Light:

    3 mercaptopropyl trimethoxysilane


    glycidoxy propyl trimethoxy silane

    3-Mercaptopropyltriethoxysilane CAS NO 4420-74-0 Silane Coupling Agent KH-590 ​




    Chemical Name: 3-Mercaptopropyltriethoxysilane

    1. Foreign Brand:

    similar to Momentive: A-189,Y-9669

    similar to Dow corning:SZ-6083
    similar to Japan ShinEstu: KBM-573

    Product description

    Structural formula:


    Empirical formula: C6H16O3SSi

    Molecular weight: 196.34

    CAS No.: 4420-74-0

    Chemical name:

    γ-Mercaptopropyl trimethoxysilane


    LT-590 is a bifunctional organosilane possessing a reactive organic mercapto and a hydrolysable inorganic methoxysilyl group. The dual nature of its reactivity allows it to bind chemically to both inorganic materials (e.g. glass, metals, fillers) and organic polymers (e.g. thermoplastics, thermosets or elastomers) thus functioning as adhesion promoter, crosslinker agent, surface modifier or reactive reagent.

    It is a clear, colorless liquid with a slightly mercaptan odor. It is soluble in alcohols, ketones and aliphatic or aromatic hydrocarbons.


    Technical data

    Typical characteristics Value
    Appearance colorless transparent liquid
    Purity ≥97.0%
    Density at 25℃ 1.057g/ml
    Boiling point at 760mmHg 93℃
    Flash point 88℃
    Refractive index (20℃) 1.440



    In the presence of water, the methoxy groups of LT590 hydrolyze to form reactive silanol groups which can bond to a variety of inorganic substrates. The organophilic mercapto end of LT-590 can react with a suitable polymer. Hydrolysis of LT-590 is catalyzed by acids.

    Examples of suitable inorganic substrates are glass, glass fibers, quartz, silicia, sand, cristobalite, mica kaolin, talc, other siliate fillers and metals.


    Application and performance

    KH-590 is used in applications such as:

    ² Glass composites: as a finish or a size ingredient.

    ² Glass and metal primer.

    ² Sealants and adhesives: as a primer, additive, or for chemical modification of the polymer.

    ² Mineral filled polymers: for pretreat- ment of fillers and pigments or as an additive.

    Important product effects that can be achieved through the use of KH-590 include:

    ² Compression set.

    ² Improved mechanical properties, e.g. flexural strength, tensile strength, impact strength and modulus of elasticity, tear strength.

    ² Improved moisture and corrosion resistance.

    ² Improved electrical properties, such as dielectric constant, volume resistivity.

    ² Increased thermal resistivity.

    KH-590 can also improve such processing properties as:

    ² Cure time

    ² Filler dispersion

    ² Rheological behavior: (e.g. viscosity reduction)

    ² Higher filler loading

    Contact Details
    Lyrin Industrial Corporation Limited

    Contact Person: silicone

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