Item No.: | Censil 75 |
Chemical Name | Bis(3-triethoxysilylpropyl)disulfane |
Chemical Formula: | C18H42O6S4Si2 |
CAS No.: | 56706-10-6 |
EINECS No: | 260-350-7 |
Properties: | Censil 75 is a pale yellow clear liquid with light odor of ethyl alcohol and soluble easily in ethyl alcohol, acetone, benzene, toluene etc. It is unsoluble in water. |
Silane Coupling agent Censil 75 Bis [3-(triethoxysilyl) propyl] disulfide
Properties
Censil 75 (Bis(3-triethoxysilylpropyl)disulfide) TESPD is a bifunction polysulfidic organosilane and has been widely in the rubber industry. Crosile®75 TESPD is used to improve the reinforcing capability of fillers with silanol group on the their surface,and also as an integral part of curing systems to improve cross-linking network properties.
Compared to the polysulfidic organosilane Crosile®69(Bis(3-triethoxysilylpropyl)tetrasulfide), Crosile®75 has a higher temperature stability and therefore allows higher mixing temperatures.
Crosile®75 imparts greater tensile strength, higher module, reduced compression set, increased abrasion resistance and optimized dynamic properties.
Equivalent Grade
Silquest@A-1589,Si75, Dowcoring Z-6920,BIS(TRIETHOXYSILYLPROPYL)DISULFIDE, Bis(3-triethoxysilylpropyl)disulfane, BIS[3-(TRIETHOXYSILYL)PROPYL]-DISULFIDE , Bis[3-(triethoxysilyl)propyl] persulfide, 3,3′-Bis-(triethoxysilylpropyl) disulfide, Bis[3-(triethoxysilyl)propyl] perdisulfide, Si266,Silane TESPD
Specifications
Properties | Units | Target Values (Spec,Limits) |
Alcohol content | %(wt) | ≤0.5% |
γ2 Content | %(wt) | ≤3.0% |
Other impurity content | %(wt) | ≤1.0% |
Viscosity 25°C (cps) | Cps | ≤14.0 |
Sulfur Content | %(wt) | 15.0 ± 1.0 |
Specific Gravity (25°C) |
| 1.080 ± 0.020 |
Refractive Index (25°C) |
| 1.480 ± 0.020 |
Application
Censil 75 is a kind of multifunctional silane coupling agent that has been used successfully in the rubber industry. It is used to improve physical and mechanical properties of vulcanizates.
Crosile®75 is able to markedly improve tensile strength, tearing strength and abrasive resistance and reduce compression set of vulcanizates. In addition, it can reduce the viscosity and improve the process ability of rubber products.
Crensil 75 is especially suitable to improve the reinforcing properties of fillers that contain hydroxyl groups in all unsaturated polymers having double bonds or their blends.
Silica, talc powder, mica powder and clay can be used in combination with Censil 75 in polymers such as NR, IR, SBR, BR, NBR and EPDM. Recommend dosage 2.0-8.0PHR