Name: Triethoxysilylpropyl Disulfide (Si75 Liquid)
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Triethoxysilylpropyl Disulfide (Si75 Liquid)
HOME > PRODUCTS > Crosslinking Agents > Triethoxysilylpropyl Disulfide (Si75 Liquid)

Triethoxysilylpropyl Disulfide (Si75 Liquid)

Chemical Name:Triethoxysilylpropyl Disulfide (Si75 Liquid)

CAS No.: 56706-10-6

Product Categories:Organic Chemistry

Molecular Formula:

Formula Weight:474.83

Appearance:Pale yellow to light brown transparent liquid with slight ethanol odor

Packaging Method:25KG/200L Plastic Drum

Type Of Transportation:By Air/By Sea/By Train/By Express

Sample:Available

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Product Description Of

Triethoxysilylpropyl Disulfide (Si75 Liquid)

Density (25°C): 1.020–1.050 g/cm³

Refractive Index (25°C): 1.460–1.468

Flash Point: ≥110 °C

Sulfur content: 14.0% typical

Purity: ≥95.0%

Solubility: Soluble in alcohols, aromatic solvents and rubber oils; insoluble in water. Sensitive to moisture, easy to hydrolyze in humid environment.

Chemical Characteristics

Si75 is a bifunctional organosilane coupling agent with disulfide group and triethoxysilyl group.

The ethoxy groups can hydrolyze and react with hydroxyl groups on inorganic fillers such as silica, clay and talc. The disulfide group can react with rubber molecular chains during vulcanization to form stable chemical bonds between inorganic filler and rubber matrix. Compared with Si69, Si75 has shorter disulfide chain, better thermal stability, lower scorch tendency and no premature crosslinking during rubber mixing.

Chemical Properties Of

Triethoxysilylpropyl Disulfide (Si75 Liquid)

chemical name	Triethoxysilylpropyl Disulfide (Si75 Liquid)
abbreviation
colour	colorless clear liquid
Purity (%)	99%
Density (25℃）	1.03-1.10
Refractive index (25℃）	1.4100-1.4200

Safety Information Of

Triethoxysilylpropyl Disulfide (Si75 Liquid)

dangerous mark	T+
Hazard Category code	21/22-26-34-42
safety instructions	23-26-28-36/37/39-45
Dangerous goods transportation number	UN 3390 6.1/PG 1
WGK Germany	3
RTECS	VV6691000

Product Application Of

Triethoxysilylpropyl Disulfide (Si75 Liquid)

Si75 is a widely used multifunctional organosilicon additive for rubber and tire industries.
Improves elastic modulus and tensile strength of rubber
Significantly enhances wear resistance and compression performance
Reduces rubber viscosity and saves processing energy consumption
It is most suitable for rubber formulations using hydroxyl-containing fillers in double-bond polymers or blends.
Suitable fillers: silica, silicate, chalk, etc.
Suitable rubbers: natural rubber (NR), styrene-butadiene rubber (SBR), isoprene rubber (IR), butadiene rubber (BR), nitrile rubber (NBR), ethylene propylene diene monomer (EPDM), etc.
Compared with Si96, Si75 has lower activity disulfide functional groups, providing better and more reliable scorch safety.

Packaging Method Of

Triethoxysilylpropyl Disulfide (Si75 Liquid)

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