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Gelest DMS-S45

Gelest SILANOL TERMINATED POLYDIMETHYLSILOXANE, 50,000 cSt (DMS-S45) functions as an intermediate, binder, and resin.

Chemical Name: Siloxanes and Silicones, di-Me, hydroxy-terminated

CAS Number: 70131-67-8

Functions: Binder & Resin, Intermediate

Chemical Family: Organosilane, Siloxanes

Synonyms: Di-Me hydroxy-terminated siloxanes, Hydroxy-terminated di-Me polysiloxanes, Hydroxy-terminated di-Me siloxanes, Silanol group-terminated polydimethylsiloxanes, Silanol-terminated di-Me polysiloxanes, Silanol-terminated di-Me siloxanes, Silanol-terminated di-Me siloxanes and silicones, Silanol-terminated dimethylpolysiloxanes, Silanol-terminated polydimethylsiloxanes

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Identification & Functionality

Chemical Family
Base Chemicals Functions
CASE Ingredients Functions
Chemical Structure

Features & Benefits

Product Highlights

Terminal silanol groups render polydimethylsiloxanes susceptible to condensation under both mild acid and base conditions. They are intermediates for most room temperature vulcanizeable (RTV) condensation cure silicones. The reactivity of silanol fluids is utilized in applications other than RTVs. Low viscosity silanol fluids are employed as filler treatments and structure control additives in silicone rubber compounding. Intermediate viscosity (1,000-10,000 cSt) fluids can be applied to textiles as durable fabric softeners. High viscosity silanol terminated fluids form the matrix component in tackifiers and pressure sensitive adhesives.

Applications & Uses

Markets
Adhesive & Sealant Type

Properties

Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Hydroxide Content0.015 - 0.017eq/kg-
Hydroxide Content0.03wt%-
Molecular Weight110000.0g/mol-
Density0.98g/ml-
Refractive Index (at 20°C)1.403--
Viscosity (at 25°C)50000.0cSt-

Regulatory & Compliance

Packaging & Availability

Standard Packaging
  • 100 g
  • 3 kg
  • 16 kg
  • 200 kg
Packaging Under

Nitrogen