Tris(trimethylsilyl) borate
Also known as: Tris(trimethylsiloxy)boron, Tris(trimethylsilyl) borate, Boric acid tris(trimethylsilyl) ester, Silanol, 1,1,1-trimethyl-, 1,1',1''-triester with boric acid (H3BO3), Tris(trimethylsilyl)borate (Tris(trimethylsiloxy)boron)
Tris(trimethylsilyl) borate (CAS 4325-85-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H27BO3Si3 and a molecular weight of 278.376 g/mol. Key properties include a melting point of -35ºC, a boiling point of 186.0±0.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 42.8±0.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 4325-85-3
- Jingsj CID
- J-6725-4
- Molecular Formula
- C9H27BO3Si3
- Molecular Weight
- 278.376 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | -35ºC |
|---|---|
| Boiling Point | 186.0±0.0 °C at 760 mmHg |
| Density | 0.9±0.1 g/cm3 |
| Flash Point | 42.8±0.0 °C |
| Exact Mass | 278.136108 |
| PSA | 27.69000 |
| LogP | 5.45 |
| Vapor Pressure | 0.9±0.3 mmHg at 25°C |
| Refractive Index | 1.398 |
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 Tris(trimethylsilyl) borate?
The CAS number of Tris(trimethylsilyl) borate is 4325-85-3.
What are the molecular formula and molecular weight of Tris(trimethylsilyl) borate?
Tris(trimethylsilyl) borate has molecular formula C9H27BO3Si3 and molecular weight 278.376 g/mol.
What are the upstream and downstream products of Tris(trimethylsilyl) borate?
For Tris(trimethylsilyl) borate, Upstream Products: Trimethylsilyl acetate, Boric acid, 1,1,1,3,3,3-Hexamethyldisilazane; Downstream Products: Bis(trimethylsilyl) sulfate, Boric acid, Trimethylsilyl acetate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Tris(trimethylsilyl) borate (CAS 4325-85-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-6725-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.