Chemical Name
Gamma mercaptopropyltriethoxysilane
Chemical Structure

(C2H5O)3SiCH2CH2CH2-SH

Molecular Formula

C9H22O3SSi

CAS
14814-09-6
Physicochemical Properties

A colorless transparent liquid with a slight special odor, easily soluble in various solvents such as ethanol, acetone, benzene, toluene, etc. Insoluble in water, but prone to hydrolysis when in contact with water or moisture. Boiling point 82.5 ℃ (0.67 KPa), specific gravity 1.000 (20 ℃), flash point 87 ℃. Molecular weight 238.

Technical Specifications:
HP-1891 contentEthanol contentSpecific gravity (25 ℃)Refractive index (25 ℃)
≥95%≤1.0%0.980±0.0201.430±0.020
Applications

◎ It is a silane coupling agent with thiol functional groups, commonly used to treat inorganic fillers such as SiO2and carbon black. It acts as an activator, coupling agent, crosslinking agent, and reinforcing agent in polymers such as rubber and silicone rubber. As a metal surface rust inhibitor, it has special functions. Using HP-1891 to treat metal surfaces such as gold, silver, and copper can improve their corrosion resistance, oxidation resistance, and increase their adhesion to polymer materials such as resins.

Widely used in filling polymer materials, it can be applied to systems such as nitrile/phenolic, epoxy, PVC, polystyrene, polysulfide, polyurethane, nylon, styrene butadiene rubber, chloroprene rubber, nitrile rubber, EPDM, and natural rubber.

In the rubber and tire industries, it has special effects and is commonly used to treat inorganic fillers such as white carbon black, carbon black, glass fiber, mica, etc. It can cause good coupling effect between rubber and inorganic fillers such as white carbon black, significantly improve the physical and mechanical properties of products, especially suitable for sulfur vulcanization and peroxide vulcanization systems. It can improve the tensile strength of rubber, reduce its permanent compression deformation, and improve the wear resistance of rubber.

Can be used for anti shrink finishing of fabrics in textiles.


Product Dosage

Suggested usage: 1.0~4.0 PHR.

Packaging & Storage

1. Packaging: Plastic drum packaging, with a net weight of 25 kilograms, 200 kilograms, and 1000 kilograms per drum.

2. Sealed storage: placed in a cool, dry and ventilated place, moisture-proof and waterproof.

3. Storage period: At least two years under normal storage conditions.


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