Chemical Name:
Bis-(γ -triethoxysilylpropyl)-tetrasulfide
Trade name: A-1289(OSi); Z-6940(Dow Corning); Si 69(Degussa)
Formula:
(C2H5O)3Si(CH2)3-S2-(CH2)3Si(OC2H5)3
Specification:
A pale yellow clear liquid with light odor of ethyl alcohol and soluble easily in ethyl alcohol, acetone, benzene, toluene and chlorohydrocarbon.
CAS NO.:  40372-72-3
Purity, %:  ≥ 22%± 1%
Molecular weight:  539.0
Boiling Point:  250oC
Flash Point  ≥ 110
Density(ρ20)g/cm3:  1.09± 0.01
PH  7± 1
Refractive Index(n25D):  1.4850± 0.0005
Appilcations:
Si-69 is a kind of silane coupling agent with multiple functional groups successfully used in rubber industry to improve modulus and tensile strength of rubber, to reduce the compound viscosity and save process energy consumption. It's especially applicable for polymers with double bond or rubber formulation with hydroxyl fillers. The suitable fillers include silica, silicate, clay, etc. The suitable rubber include natural rubber (NR), Butadiene styrene rubber (SBR), Isoprene rubber (IR), Butadiene rubber (BR), Acrylonitrile butadiene rubber (NBR), Ethylene propylene diene rubber (EPDM), etc.
Packing & storage:
(1) Plastic barrel, net weight 5kg, 10kg, 25kg, 200kg; Or other packing on request.
(2) Store in a cool, dry place and avoid