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CAS No. 40372-72-3 Sulfur Silane Coupler Si69 For Producing Tyre To Improve Abrasion-resistant Property
Product Name : Bis [3-(triethoxysilyl) propyl] Tetrasulfide Sulfur Silane Coupling Agent
Synonyms : bis(triethoxysilylpropyl)tetrasulfide; bis(triethoxysililpropyl)tetrasulfane; 3-triethoxy-silylpropyl-tetrasulfane
Formula : (C2H5O)3Si(CH2)3-S4-(CH2)3Si(OC2H5)3
CAS No. : 40372-72-3
EINECS No. : 254-896-5
Description
Bis(triethoxysilypropyl)tetrasulfide is an organosulfur compound. The molecule consists of two trialkoxysilyl propyl groups linked with a polysulfide.
Physical Properties
1. Pale yellow liquid with light odor of ethl alcohol.
2. Soluble easily in ethl alcohol, acetone, benzene, toluene and other organic solvent.
3. Insoluble in water.
Specification
| Test Item | Target Values(Spec.Limits) |
| Sulfur Content | 22% ± 1% |
| The average sulfur chain length | 3.75±0.15 |
| Other impurity content | ≤1.0% |
| Alcohol content | ≤0.5% |
| *γ2 Content | ≤3.0% |
| Specific Gravity (25℃,g/cm3) | 1.080 ± 0.020 |
| Refractive Index (25℃) | 1.480 ± 0.020 |
| Viscosity 25℃ | ≤14(cps) |
| S2 content | 17±3% |
| S3 content | 30±4% |
| S4 content | 24±3% |
| S5 - S8 content | 27±3% |
| Chlorine Content | ≤0.6% |
| Weight Loss Rate(105℃) | ≤2.0% |
| Resiue On Ignition(800±25℃) | 11.3±1.0% |
Application
| 1. It can improve the physical and mechanical properties of vulcanizates of the rubber. |
| 2. It can be applied to hte fillers that contain hydroxyl groups to improve the reinforcing properties.Such as silica, talc powder, mica powder and clay etc. |
Recommend dosage 1.0-4.0PHR
Package and storage
1. Package: 25kg/200kg in plastic drums and 1060kg/IBC.
2. Storage: Store in a cool, dry, well-ventilated area and away from direct sunlight.
3. Shelf life: Two years in ventilating, cool and dry area.
