company tower banner
Gelest Inc. Company Logo

Gelest HMS-301

Gelest (25-35% METHYLHYDROSILOXANE) - DIMETHYLSILOXANE COPOLYMER, TRIMETHYLSILOXANE TERMINATED, 25-35 cSt (HMS-301) functions as an antioxidant and crosslinker.

Chemical Name: Poly(dimethylsiloxane- co - methylhydrosiloxane), trimethylsilyl terminated

CAS Number: 68037-59-2

Chemical Family: Organosilane

Functions: Antioxidant, Crosslinking Agent

Safety Data Sheet

Knowde Enhanced TDS

Identification & Functionality

Chemical Family
Base Chemicals Functions
Chemical Structure

Applications & Uses

Markets

Properties

Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Molecular Weight1,900 - 2,000g/mol-
Density0.98g/ml-
Refractive Index (at 20°C)1.399--
Viscosity (at 25°C)25 - 35cSt-

Regulatory & Compliance

Technical Details & Test Data

Technical Details

Siloxane-Based Silane Reducing Agent

Organosilanes are hydrocarbon-like and possess the ability to serve as both ionic and free-radical reducing agents. These reagents and their reaction by-products are safer and more easily handled and disposed than many other reducing agents. The metallic nature of silicon and its low electronegativity relative to hydrogen lead to polarization of the Si-H bond yielding a hydridic hydrogen and a milder reducing agent compared to aluminum-, boron-, and other metal-based hydrides.

Pendant Functional Fluid; MethylHydrosiloxane-Dimethylsiloxane Copolymer, TMS Terminated

MethylHydrosiloxane copolymers are the primary cross linkers for 2-part vinyl-addition silicones and intermediates for functional copolymers.

Packaging & Availability

Standard Packaging
  • 100 g
  • 3 kg
  • 16 kg
  • 180 kg
Availablilty
  • Reduced volatility grade available
  • Potential reducing agents available 
Packaging Under

Nitrogen