Nanjing SiSiB Silicones Co., Ltd.
Nanjing SiSiB Silicones Co., Ltd.
SiSiB® PC1951
SiSiB® PC1951


SiSiB® PC1951 is a bifunctional organosilane possessing a reactive secondary amino group and hydrolyzable inorganic trimethoxysilyl groups. 

The dual nature of its reactivity allows SiSiB® PC1951 to bind chemically to both inorganic materials and organic silicone polymers, thus functioning as an adhesion promoter, surface modifier and as a reactant for product modification. 

SiSiB® PC1951 is a colorless to slight yellowish liquid with a light amine-like odor, it is soluble in alcohols, and aliphatic or aromatic hydrocarbons. It is the equivalent of Evonik's Dynasylan 1189 silane.

SiSiB® PC1951

Technical Data







Molecular Weight


Boiling Point

238°C [760mmHg]

Flash Point


Color and Appearance

Colorless to yellowish clear liquid

Density 25/25°C


Refractive Index

1.4246 [25°C]

Min Purity



  • SiSiB® PC1951 can be used as a primer or additive and for the chemical modification of sealants and adhesives.

  • SiSiB® PC1951 can be used as a size constituent or finish for glass fiber/glass fabric composites.

  • SiSiB® PC1951 amino silane can be used as an additive to phenolic, furan and melamine resins used in foundry resins.

  • SiSiB® PC1951 can be used for pretreatment of fillers and pigments used in mineral filled polymers.

  • SiSiB® PC1951 can be used as a primer and additive to improve the adhesion of paints and coatings to the substrate.

  • SiSiB® PC1951  silanes can be used as an endcapper for polyurethanes.

  • SiSiB® PC1951 can be used as starting material in the synthesis of amino-functional silicones.

Packing and Storage

  • SiSiB® PC1951 is supplied in 200Kg steel drum or 1000Kg IBC container.

  • In the unopened original container SiSiB® PC1951 has a shelf life of one year in a dry and cool place.

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SiSiB® PC1951