SCA-S75X Bis- (3-(triethoxysilyl)-propyl) -Disulfide (CAS 56706-10-6) CAS NO.56706-10-6

SCA-S75X (similar to Si 75 from Evonik)is a bifunctional, sulfur-containing organofunctional silane used in the rubber industry in combination with fillers like silica that carry silanol groups.

Abstract
SCA-S75X (similar to Si 75 from Evonik)is a bifunctional, sulfur-containingganofunctional silane used in the rubber industry in combination with fillers like silica that carry silanol groups.

The Equivalent
Momentive A-1589
Dow Corning Z-6920
Shin-Etsu N/A
Evonik Degussa Si-75
Wacker N/A

Typical Properties
Index Value
Appearance Yellowish liquid
Average Sulfur Chain Length, HPLC 2.2
Sulfur Content, % 14.4
Disulfide Content, % 85
Free Sulfur Content, % ≤ 1.0
By-product Content, % ≤ 3.0
Flash Point, ≥ 100

Applications Performance
SCA-S75X(similar to Si75 of Evonik) reacts with fillers containing silanol groups during mixing with the polymer during the vulcanization process under formation of covalent chemical bonds. This imparts better tensile strength, higher module, reduced compression set, increased abrasion resistance optimized dynamic properties. SCA-S75X is used in many applications where white fillers containing silanol groups are involved optimum technical properties are required.

1. Tires: An excellent reinforcing agent in tires to reduce heat built-up, reduce rolling resistance improve the tires wet grip.
2. Shoe Soles: Generally applicable silane fimproving abrasion resistance of sole compounds containing precipitated silica.
3. Mechanical Rubber Goods: General use silane fachieving good dynamic properties, low compression set high abrasion resistance in mixtures containing white fillers.
4. Adhesives sealants: An excellent adhesion promoter to glass, aluminum, steel other inorganic surface in polysulfide, nitrile other rubber adhesives, sealants coatings.