Tris(trimethylsiloxy)silane

CAS 1873-89-8[(CH3)3SiO]3SiHChemical Synthesis

Tris(trimethylsiloxy)silane (CAS: 1873-89-8), with the molecular formula [(CH3)3SiO]3SiH and a molecular weight of 296.66 g/mol, is a versatile organosilicon compound. It is primarily utilised in chemical synthesis as a reagent and building block. Its siloxane structure and reactive Si-H bond make it valuable in various organometallic and organosilicon chemistry applications, contributing to the development of novel materials and compounds.

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Tris(trimethylsiloxy)silane ([(CH3)3SiO]3SiH) — chemical structure, CAS 1873-89-8; Chemistry, fine chemical supplied by Tech Serve Solutions

Chemical SynthesisOrganometallic ReagentsOrganosiliconSiloxanes

01 /Applications

Organosilicon Synthesis

Tris(trimethylsiloxy)silane serves as a key intermediate in the synthesis of complex organosilicon compounds and polymers. Its unique structure allows for controlled introduction of siloxane units into larger molecular frameworks.

Reagent in Organic Chemistry

The compound's reactive silicon hydride (Si-H) group makes it a useful reducing agent and a precursor for hydrosilylation reactions. It facilitates the formation of new carbon-silicon bonds in organic synthesis.

Material Science Precursor

It can be employed in the development of novel materials, including specialised coatings and functionalised silicas. Its properties lend themselves to creating materials with tailored surface characteristics.

02 /Properties

Molecular weight	296.66
Linear formula	[(CH3)3SiO]3SiH
Assay	≥98%
Boiling point	185 °C(lit.)
Density	0.852 g/mL at 25 °C(lit.)
Refractive index	n20/D 1.386(lit.)

03 /Safety & handling

GHS hazard pictogram: Flammable (GHS02) — Flammable

Warning

Hazard statements

H226Flammable liquid and vapour

Protective equipment	Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter
Flash point	55 °C / 131 °F
Transport (UN / ADR)	UN 1993C 3 / PGIII
Water hazard class (WGK, DE)	3
Risk statements (R)	10
Safety statements (S)	23-24/25

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

1873-89-8

MDL number

MFCD00054865

PubChem substance

24863087

Beilstein registry

1772735

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is Tris(trimethylsiloxy)silane used for?

Tris(trimethylsiloxy)silane is used in chemical synthesis, particularly in organosilicon chemistry and as a reagent in organic reactions like hydrosilylation.

What is the CAS number and chemical formula for Tris(trimethylsiloxy)silane?

The CAS number is 1873-89-8 and the chemical formula is [(CH3)3SiO]3SiH.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies Tris(trimethylsiloxy)silane with an assay of ≥98%. We do not represent this product as USP, BP, EP or other pharmacopoeia grades.

How should Tris(trimethylsiloxy)silane be handled safely?

Tris(trimethylsiloxy)silane is a flammable liquid (H226) and should be handled with appropriate personal protective equipment, including eyeshields, gloves, and respiratory protection. Keep away from heat, hot surfaces, sparks, and open flames.

Can Tech Serve Solutions export Tris(trimethylsiloxy)silane?

Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals and can export Tris(trimethylsiloxy)silane. Please contact us for international shipping details.