Bis[3-(triethoxysilyl)propyl]tetrasulfide
Synonym(s):3,3′-Tetrathiobis(propyl-triethoxysilane);TESPTS
- CAS NO.：40372-72-3
- Empirical Formula: C18H42O6S4Si2
- Molecular Weight: 538.95
- MDL number: MFCD00053751
- EINECS: 254-896-5
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-09-03 19:45:19
![Bis[3-(triethoxysilyl)propyl]tetrasulfide Structural](https://img.chemicalbook.in/CAS/GIF/40372-72-3.gif)
What is Bis[3-(triethoxysilyl)propyl]tetrasulfide?
Chemical properties
Yellowish clear liquid
The Uses of Bis[3-(triethoxysilyl)propyl]tetrasulfide
Bis[3-(triethoxysilyl)propyl] tetrasulfide (TESPTS) is generally used as a crosslinking agent and reinforcing filler in the manufacturing of rubber. TESPT film provides corrosion protection to the metallic substrates. It is also used as a precursor in the synthesis of mesoporous organosilicas.
The Uses of Bis[3-(triethoxysilyl)propyl]tetrasulfide
Bis[3-(triethoxysilyl)propyl]tetrasulfide is used in radial tires, rubber tire treads, carcass, tire walls, solid rubber tires and other rubber products. It acts as a chemical intermediate and as a cross linking agent. Furthermore, it acts as a coupling agent used to chemically modify silica surface. In addition, it serves as a curing agent for good heat aging.
Properties of Bis[3-(triethoxysilyl)propyl]tetrasulfide
| Boiling point: | 250 °C |
| Density | 1.08 g/mL at 20 °C(lit.) |
| refractive index | n |
| Flash point: | 91°C |
| form | Liquid |
| Specific Gravity | 1.095 |
| Water Solubility | Miscible with toluene, primary alcohols, ketones, benzene, chlorinated hydrocarbons, acetonitrile, dimethylformaminde and dimethysulfoxide. Immiscible with water. |
| Hydrolytic Sensitivity | 7: reacts slowly with moisture/water |
| BRN | 2062235 |
| CAS DataBase Reference | 40372-72-3(CAS DataBase Reference) |
| EPA Substance Registry System | 3,16-Dioxa-8,9,10,11-tetrathia-4,15-disilaoctadecane, 4,4,15,15-tetraethoxy- (40372-72-3) |
Safety information for Bis[3-(triethoxysilyl)propyl]tetrasulfide
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. |
Computed Descriptors for Bis[3-(triethoxysilyl)propyl]tetrasulfide
| InChIKey | VTHOKNTVYKTUPI-UHFFFAOYSA-N |
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