Tri-tert-butoxysilanol

三(叔丁氧基)硅烷醇

Also known as: Tris(tert-butoxy)silanol, Tri-t-butoxysilanol, Tris(2-methyl-2-propanyl) hydrogen orthosilicate, tri-tert-butyl hydrogen orthosilicate, Silicic acid (H4SiO4), tris(1,1-dimethylethyl) ester, hydroxy-tris[(2-methylpropan-2-yl)oxy]silane, tri-tert-butoxysilanol, tris-tert-butoxysilanol, NSC 243646, MFCD00271024

Tri-tert-butoxysilanol (CAS 18166-43-3) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C12H28O4Si and a molecular weight of 264.434 g/mol. It is also known as Tris(tert-butoxy)silanol, Tri-t-butoxysilanol and Tris(2-methyl-2-propanyl) hydrogen orthosilicate. Key properties include a melting point of 63-65ºC(lit.), a boiling point of 263.4±23.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 113.1±22.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 18166-43-3
Jingsj CID: J-26623-9
Molecular Formula: C₁₂H₂₈O₄Si
Chinese Name: 三(叔丁氧基)硅烷醇
Molecular Weight: 264.434 g/mol
Category: Alcohols
Last updated: 8/21/2026

No offers for this compound yet.

Request a quote

Physicochemical Properties

Melting Point	63-65ºC(lit.)
Boiling Point	263.4±23.0 °C at 760 mmHg
Density	0.9±0.1 g/cm3
Flash Point	113.1±22.6 °C

Frequently Asked Questions

What is the CAS number of Tri-tert-butoxysilanol?

The CAS number of Tri-tert-butoxysilanol is 18166-43-3.

What are the molecular formula and molecular weight of Tri-tert-butoxysilanol?

Tri-tert-butoxysilanol has molecular formula C12H28O4Si and molecular weight 264.434 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "Tri-tert-butoxysilanol (CAS 18166-43-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-26623-9 (accessed 2026-10-23).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.