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Tris(trimethylsilyl) phosphite

三(三甲基硅基)亚磷酸酯

Also known as: Phosphorous acid tris(trimethylsilyl) ester, Phosphorous acid, tris(trimethylsilyl) ester, Tris(trimethylsilyl) phosphite 95%, Tris(trimethylsilyl) phosphite 97+%, Tris(trimethylsily)phosphite, tris(trimethylsilyl) phosphite, Trimethylsilanol phosphite, tris-(trimethylsiloxy)phosphane, tritrimethylsilyl phosphite, Silanol, trimethyl-, phosphite (3:1)

Tris(trimethylsilyl) phosphite (CAS 1795-31-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H27O3ψ3 and a molecular weight of 298.539 g/mol. It is also known as Phosphorous acid tris(trimethylsilyl) ester, Phosphorous acid, tris(trimethylsilyl) ester and Tris(trimethylsilyl) phosphite 95%. Key properties include a boiling point of 236.1±23.0 °C at 760 mmHg, a density of 0.893 g/mL at 25 °C(lit.) and a flash point of 96.6±22.6 °C. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1795-31-9
Jingsj CID
J-26685-7
Molecular Formula
C9H27O33
Chinese Name
三(三甲基硅基)亚磷酸酯
Molecular Weight
298.539 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point236.1±23.0 °C at 760 mmHg
Density0.893 g/mL at 25 °C(lit.)
Flash Point96.6±22.6 °C

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of Tris(trimethylsilyl) phosphite?

The CAS number of Tris(trimethylsilyl) phosphite is 1795-31-9.

What are the molecular formula and molecular weight of Tris(trimethylsilyl) phosphite?

Tris(trimethylsilyl) phosphite has molecular formula C9H27O3ψ3 and molecular weight 298.539 g/mol.

Is Tris(trimethylsilyl) phosphite hazardous?

Tris(trimethylsilyl) phosphite has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "Tris(trimethylsilyl) phosphite (CAS 1795-31-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-26685-7 (accessed 2026-10-22).

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