tert-Butyldimethylsilanol

Also known as: tert-butyl(dimethyl)silanol, tert-butyldimethylsilyl hydroxide, tert-butyl(hydroxy)dimethylsilane, tert-Butyl-hydroxy-dimethylsilane, Butyldimethylsilanol, Dimethyl(2-methyl-2-propanyl)silanol, Silanol, (1,1-dimethylethyl)dimethyl-, Silanol, 1-(1,1-dimethylethyl)-1,1-dimethyl-, t-BuMe2SiOH, SIB1939.0 T-BUTYLDIMETHYLSILANOL, MFCD00010673

tert-Butyldimethylsilanol (CAS 18173-64-3) is a compound in the Alcohols category listed in the Jingsj chemical database. It has the molecular formula C6H16OSi and a molecular weight of 132.276 g/mol. Key properties include a melting point of 18 °C, a boiling point of 142.3±9.0 °C at 760 mmHg, a density of 0.8±0.1 g/cm3 and a flash point of 45.0±0.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 18173-64-3
Jingsj CID: J-26616-0
Molecular Formula: C₆H₁₆OSi
Molecular Weight: 132.276 g/mol
Category: Alcohols
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	18 °C
Boiling Point	142.3±9.0 °C at 760 mmHg
Density	0.8±0.1 g/cm3
Flash Point	45.0±0.0 °C
Exact Mass	132.097046
PSA	20.23000
LogP	2.27
Vapor Pressure	2.3±0.6 mmHg at 25°C
Refractive Index	1.412

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 tert-Butyldimethylsilanol?

The CAS number of tert-Butyldimethylsilanol is 18173-64-3.

What are the molecular formula and molecular weight of tert-Butyldimethylsilanol?

tert-Butyldimethylsilanol has molecular formula C6H16OSi and molecular weight 132.276 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "tert-Butyldimethylsilanol (CAS 18173-64-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-26616-0 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.