CAS 70131-67-8: Polysiloxanes, di-Me, hydroxy-terminated

DMS-S21: Silanol Terminated PDMS, 90-120 cSt (Telechelic Functional Fluid) 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. DMS-S21 Properties Viscosity: 90-120 cStMolecular Weight: 4,200 g/molWt.% OH: 0.8-0.9OH (eq/kg): 0.47-0.53

DMS-S31: Silanol Terminated PDMS, 1,000 cSt (Telechelic Functional Fluid) 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. DMS-S31 Properties Viscosity: 1,000 cStMolecular Weight: 26,000 g/molWt.% OH: 0.1OH (eq/kg): 0.055-0.060

DMS-S45 - Silanol terminated polydimethylsiloxanes cSt 50,000

DMS-S14: Silanol Terminated PDMS, 35-45 cSt (Telechelic Functional Fluid) 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. DMS-S14 Properties Viscosity: 35-45 cStMolecular Weight: 700-1,500 g/molWt.% OH: 30.-4.0OH (eq/kg): 1.7-2.3

DMS-S45: Silanol Terminated PDMS, 50,000 cSt (Telechelic Functional Fluid) 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. DMS-S45 Properties Viscosity: 50,000 cStMolecular Weight: 110,000 g/molWt.% OH: 0.03OH (eq/kg): 0.015-0.017

DMS-S15 - SILANOL TERMINATED POLYDIMETHYLSILOXANES cSt 45-85

DMS-S51 - Silanol terminated polydimethylsiloxane cSt 90,000-150,000

Please enquire for more information about Poly(dimethylsiloxane) hydroxy terminated 40 mpa.s including the price, delivery time and more detailed product information at the technical inquiry form on this page

Poly(dimethylsiloxane) hydroxy terminated, average Mn ~550, viscosity ~25 cSt is a polymer that is used in the fabrication of various components. It has been shown to have a morphology of short chains and spherical particles. Polymerization of this polymer is accomplished through chemical initiation with dodecyl radical (C12H25). The activation energy for the polymerization reaction has been found to be 40 kJ/mol. This polymer can exist in different polymorphs depending on the degree of hydrolysis and molecular weight. Poly(dimethylsiloxane) hydroxy terminated, average Mn ~550, viscosity ~25 cSt has been used in analytical methods such as electron microscopy and chemical ionization mass spectrometry.

DMS-S51: Silanol Terminated PDMS, 90,000-150,000 cSt (Telechelic Functional Fluid) 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. DMS-S51 Properties Viscosity: 90,000-150,000 cStMolecular Weight: 139,000 g/molWt.% OH: 0.02OH (eq/kg): 0.010-0.015

Poly(dimethylsiloxane), hydroxy terminated

DMS-S15: Silanol Terminated PDMS, 45-85 cSt (Telechelic Functional Fluid) 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. DMS-S15 Properties Viscosity: 45-85 cStMolecular Weight: 2,000-3,500 g/molWt.% OH: 0.9-1.2OH (eq/kg): 0.53-0.70

DMS-S35: Silanol Terminated PDMS, 5,000 cSt (Telechelic Functional Fluid) 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. DMS-S35 Properties Viscosity: 5,000 cStMolecular Weight: 49,000 g/molWt.% OH: 0.07OH (eq/kg): 0.039-0.043

DMS-S27: Silanol Terminated PDMS, 700-800 cSt (Telechelic Functional Fluid) 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. DMS-S27 Properties Viscosity: 700-800 StMolecular Weight: 18,000 g/molWt.% OH: 0.2OH (eq/kg): 0.11-0.13

Polydimethylsiloxane is frequently used in a liquid containing 4-5% silica gel, emulsifiers and preservatives. It is employed in applications like contact lenses, medical devices, elastomers, in shampoos, food (antifoaming agent), caulking, lubricants, kinetic sand , and heat-resistant tiles. PDMS is a common surfactant, component of defoamers and as an herbicidal penetran.This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

DMS-S42: Silanol Terminated PDMS, 18,000 cSt (Telechelic Functional Fluid) 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. DMS-S42 Properties Viscosity: 18,000 cStMolecular Weight: 77,000 g/molWt.% OH: 0.4OH (eq/kg): 0.023-0.025