Bis(triethoxysilylpropyl) disulfide CAS 56706-10-6
Bis(triethoxysilylpropyl) disulfide Basic informationApplication
| Product Name: | Bis(triethoxysilylpropyl) disulfide |
| Synonyms: | BIS(TRIETHOXYSILYLPROPYL)DISULFIDE;BIS[3-(TRIETHOXYSILYL)PROPYL]-DISULFIDE;4,4,13,13-tetraethoxy-3,14-dioxa-8,9-dithia-4,13-disilahexadecane;4,4,,-Tetraethoxy-3,-dioxa-8,9-dithia-4,-disilahexadecan;[Dithiobis(trimethylene)]bis(triethoxysilane);A-1589;Bis[3-(triethoxysilyl)propyl] perdisulfide;Bis[3-(triethoxysilyl)propyl] persulfide |
| CAS: | 56706-10-6 |
| MF: | C18H42O6S2Si2 |
| MW: | 474.82 |
| EINECS: | 260-350-7 |
| Product Categories: | silane;Adhesion Promoters;Coupling Agents;Dispersing Agents;Sulfur Silanes;Surface Modifiers;Industrial/Fine Chemicals;Sulfur |
| Mol File: | 56706-10-6.mol |
Bis(triethoxysilylpropyl) disulfide Chemical Properties
| Melting point | °C |
| Boiling point | 250 |
| density | 1.03 |
| vapor pressure | 0-7910Pa at 20-25℃ |
| refractive index | 1.457 |
| Fp | 75°C |
| storage temp. | 2-8°C |
| Specific Gravity | 1.03 |
| Appearance | Colorless to light yellow Liquid |
| Water Solubility | 14-1000000000μg/L at 20℃ |
| Hydrolytic Sensitivity | 7: reacts slowly with moisture/water |
| InChI | InChI=1S/C18H42O6S2Si2/c1-7-19-27(20-8-2,21-9-3)17-13-15-25-26-16-14-18-28(22-10-4,23-11-5)24-12-6/h7-18H2,1-6H3 |
| InChIKey | FBBATURSCRIBHN-UHFFFAOYSA-N |
| SMILES | CCO[Si](OCC)(OCC)CCCSSCCC[Si](OCC)(OCC)OCC |
| LogP | -3-5.2 at 20℃ |
| CAS DataBase Reference | 56706-10-6(CAS DataBase Reference) |
| EPA Substance Registry System | 3,14-Dioxa-8,9-dithia-4,13-disilahexadecane, 4,4,13,13-tetraethoxy- (56706-10-6) |
Safety Information
| Risk Statements | 20/21/22-36/37/38 |
| Safety Statements | 26-36/37/39 |
| TSCA | TSCA listed |
| Application | Footwear - Abrasion resistance - Cutting and chunking resistance - Flex life improvement Rolls - Abrasion resistance - Aging resistance - Processing- Set reduction (better load bearing) - Reduced water swell - Lower hysteresis Mechanical Molded Goods - Increased modulus - Better heat aging - Compression set reduction - Dynamic property improvement - Reduced swell to polar liquids - Filler substitution (non-black for black) Hose - Improved abrasion on cover - Better heat aging - Increased modulus - Lower compression set - Improved adhesion to reinforcing elements Solid Tires - Improved abrasion - Lower hysteresis - Higher modulus - Improved processing - Possibly better adhesion Tires - Treads for abrasion, hot tear - Carcass for adhesion and/or filler substitution - Breaker (belt) stocks for adhesion Belts Flat Belts - Increased abrasion - Improved reversion resistance - Reduced cost with clay substitution for black - Improved cord adhesion - Increased flex life and modulus V Belts - Increased modulus - Improved abrasion - Longer flex life - Improved adhesion to reinforcing elements |
| Chemical Properties | Yellowish clear liquid |
| Flammability and Explosibility | Not classified |
| Synthesis | 5089-70-3 14814-09-6 60764-86-5 56706-10-6 General procedure for the synthesis of (3-mercaptopropyl)triethoxysilane (MPTES), compounds (CAS:60764-86-5) and bis-[3-(triethoxysilyl)propyl]-disulfide (TESPD) from 3-chloropropyltriethoxysilane (CPTES): during the reaction, 50 wt.% NaHSO4 was added drop-wise to a NaHS solution solution. 325 g (2.69 mol) of NaHS solution with 8.2 g (0.0124 mol) of tetrabutylammonium bromide (TBAB) solution were added to a glass reactor, mixed well and heated to 75 °C. Subsequently, NaHSO4 solution was added slowly and dropwise just before the imminent addition. Next, CPTES was added. 497.8 g (2.07 moles) of CPTES was added to the reaction mixture within 8 min. the addition of NaHSO4 solution needed to be completed within 30 min. After 5 hours of reaction, the organic phase was separated and analyzed by gas chromatography (GC). The analysis showed that the product contained 2.0% wt. of CPTES, 87.6% wt. of MPTES, 2.7% wt. of TESPM, and 0.7% wt. of TESPD.Finally, the product was distilled under vacuum to yield MPTES with a purity of 95.4%, which is about 84% yield based on the amount of CPTES used. |
| References | [1] Patent: US6680398, 2004, B1. Location in patent: Page column 10-11 [2] Patent: US6680398, 2004, B1. Location in patent: Page column 8-9 [3] Patent: US6680398, 2004, B1. Location in patent: Page column 10 [4] Patent: US6680398, 2004, B1. Location in patent: Page column 9-10 [5] Patent: US6680398, 2004, B1. Location in patent: Page column 9 |
Bis(triethoxysilylpropyl) disulfide Preparation Products And Raw materials
| Raw materials | 3-Chloropropyltriethoxysilane-->Sodium hydrosulfide-->Sodium bisulfate |
