![Molecular structure of Bis[3-(triethoxysilyl)propyl] tetrasulfide (CAS 40372-72-3)](/images/chem_structures_svg/092/40372-72-3.svg)
Bis[3-(triethoxysilyl)propyl] tetrasulfide
Also known as: bis(triethoxysilylpropyl)tetrasulfide, bis(3-(triethoxysilyl)propyl)tetrasulfide, TESPT, Si-69, 3,3'-tetrathiobis(propyl-triethoxysilane), 4,4,15,15-tetraethoxy-3,16-dioxa-8,9,10,11-tetrathia-4,15-disilaoctadecane, triethoxy-[3-(3-triethoxysilylpropyltetrasulfanyl)propyl]silane, bis[3-(triethoxysilyl)propyl] tetrasulfide, Bis(triethoxysilylpropyl)tetrasulphane
Bis[3-(triethoxysilyl)propyl] tetrasulfide (CAS 40372-72-3) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C18H42O6S4Si2 and a molecular weight of 538.953 g/mol. Key properties include a boiling point of 509.6±60.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 262.0±32.9 °C. It is listed by 1 supplier, from 0.50 to 500.00 CNY. Record last updated Aug 21, 2026.
- CAS No.
- 40372-72-3
- Jingsj CID
- J-34594-5
- Molecular Formula
- C18H42O6S4Si2
- Molecular Weight
- 538.953 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
In StockPlatform-operated | 99% 500g | ¥250.00 | $0.07 /gBest ¥0.50/g CNY | CN China MOQ 500g | |
Made to OrderPlatform-operated | 99% 1kg | ¥500.00 | $74.82 /kg ¥500.00/kg CNY | CN China MOQ 1kg | |
Made to OrderPlatform-operated | 99% 2kg | ¥1,000.00 | $74.82 /kg ¥500.00/kg CNY | CN China MOQ 2kg |
Physicochemical Properties
| Boiling Point | 509.6±60.0 °C at 760 mmHg |
|---|---|
| Density | 1.1±0.1 g/cm3 |
| Flash Point | 262.0±32.9 °C |
| Exact Mass | 538.140259 |
| PSA | 156.58000 |
| LogP | 8.04 |
| Vapor Pressure | 0.0±1.3 mmHg at 25°C |
| Refractive Index | 1.504 |
Customs & Trade Information
| HS Code | 2931900090 |
|---|---|
| Summary | 2931900090. other organo-inorganic compounds. VAT:17.0%. Tax rebate rate:13.0%. Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward). MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Bis[3-(triethoxysilyl)propyl] tetrasulfide?
The CAS number of Bis[3-(triethoxysilyl)propyl] tetrasulfide is 40372-72-3.
What are the molecular formula and molecular weight of Bis[3-(triethoxysilyl)propyl] tetrasulfide?
Bis[3-(triethoxysilyl)propyl] tetrasulfide has molecular formula C18H42O6S4Si2 and molecular weight 538.953 g/mol.
Which suppliers offer Bis[3-(triethoxysilyl)propyl] tetrasulfide?
1 supplier(s) listed; reference unit price ¥0.50–500.00 /g.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Bis[3-(triethoxysilyl)propyl] tetrasulfide (CAS 40372-72-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-34594-5 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.