Is Vinyltrimethoxysilane (VTMS) the same as Vinyltriethoxysilane?

No. Both are vinyl-functional silanes, but their alkoxy groups and hydrolysis behavior differ. CAS 2768-02-7 identifies VTMS; it should be selected separately from vinyltriethoxysilane for the intended polymer, catalyst and processing conditions.

Is VTMS supplied as a finished XLPE cable compound or a finished sealant?

No. VTMS is a reactive silane raw material. The polymer grade, peroxide, catalyst, extrusion process and moisture-cure conditions define the finished cable compound, pipe material, adhesive or sealant system.

Which VTMS details should be confirmed for a silane-grafted polyolefin process?

Confirm assay, density, refractive index, appearance, packaging, storage controls and compatibility with the selected polymer, peroxide and catalyst system. The batch COA, product TDS and SDS should match the agreed production requirement.

Vinyltrimethoxysilane (VTMS) CAS 2768-02-7

Vinyltrimethoxysilane (VTMS), CAS 2768-02-7, is a bifunctional organosilane for silane-grafted polyolefins, cable compounds and moisture-crosslinkable resin systems. Also called trimethoxyvinylsilane, it provides a hydrolysable methoxysilyl group alongside vinyl functionality. It is a formulation raw material rather than a finished cable, pipe or sealant product. Suitability depends on the selected polymer, peroxide, catalyst and conversion conditions. Industrial lots should be aligned by purity, density, refractive index, packaging and water-sensitive handling conditions. Batch COA, TDS and SDS can be supplied against the agreed grade.

CAS: 2768-02-7
Synonyms: Trimethoxyvinylsilane, VTMS, VTMO
Einecs: 220-449-8
Molecular Formula: C₅H₁₂O₃Si
Grade: Industrial silane crosslinking grade
Package: 200 kg steel drums; IBCs by agreement
Appearance: Clear, colorless liquid
Purity: ≥96.0%
Density (25 °C): 0.97 g/mL
Refractive index (25 °C): 1.3930
Flash point (closed cup): 31 °C

Request a quote

Share:

Product Description

1 Product Introduction

2 Applications

3 Material Confirmation

Product Introduction

Vinyltrimethoxysilane (VTMS) (CAS 2768-02-7) is a bifunctional vinylsilane raw material for silane-crosslinked polymers and adhesion-focused formulations. The listed material is used in polyethylene and ethylene-copolymer processing, coatings, sealants and polymer dispersions; it is not a ready-made cable compound, crosslinked polymer or finished sealant.

Applications

Silane-crosslinked polyethylene and ethylene-copolymer compounds for cable, pipe and related processing
Vinylsilane grafting and copolymer routes in extrusion systems
Adhesion-promotion treatment for coatings on glass, metal or ceramic substrates
Adhesive, sealant and polymer-dispersion formulations where VTMS is specified

Material Confirmation

The quoted VTMS grade is confirmed against the intended grafting, compounding or formulation route, including the agreed silane assay, colour, moisture and relevant hydrolysis controls. A batch COA, with the applicable TDS and SDS, is available for the offered material. Packaging and quantity are selected for the stated production and handling requirement.

For adjacent organosilane and silicon-based raw material pages, review Chloromethylmethyldiisopropoxysilane, Chlorotrimethylsilane, and Tetraethyl Orthosilicate.

FAQ - Technical & Supply Chain

Q:
Is Vinyltrimethoxysilane (VTMS) the same as Vinyltriethoxysilane?

A: No. Both are vinyl-functional silanes, but their alkoxy groups and hydrolysis behavior differ. CAS 2768-02-7 identifies VTMS; it should be selected separately from vinyltriethoxysilane for the intended polymer, catalyst and processing conditions.
Q:
Is VTMS supplied as a finished XLPE cable compound or a finished sealant?

A: No. VTMS is a reactive silane raw material. The polymer grade, peroxide, catalyst, extrusion process and moisture-cure conditions define the finished cable compound, pipe material, adhesive or sealant system.
Q:
Which VTMS details should be confirmed for a silane-grafted polyolefin process?

A: Confirm assay, density, refractive index, appearance, packaging, storage controls and compatibility with the selected polymer, peroxide and catalyst system. The batch COA, product TDS and SDS should match the agreed production requirement.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

COA, TDS, SDS/MSDS and packing details are available on request.

Quotation

Send the CAS number, grade, quantity, packing preference and destination.

Sample & Supply

Support is available for samples, trial orders, bulk and repeat supply.

Storage & Shipping

Product-specific conditions are confirmed before order.

Current Language

Change Language