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Evonik Crosslinker 120

Evonik Crosslinker 120, part of the Crosslinker 100 series, consists of polydimethylsiloxanes containing SiH groups within the polymer chain. In addition to SiH groups within the chain, the Crosslinker 100 series features terminal SiH groups. These crosslinkers are essential components of polyaddition silicones. When working with two-component silicone formulations, it is crucial to maintain strict separation between Pt catalysts (e.g., Catalyst 500 series) and SiH crosslinkers to ensure proper performance.

Chemical Family: Silicones

Functions: Crosslinking Agent

End Uses: Reactive Adhesive, Reactive Sealant

Technical Data Sheet

Knowde Enhanced TDS

Identification & Functionality

Chemical Family
CASE Ingredients Functions
Chemical Structure

Applications & Uses

Adhesive & Sealant Type

When working with two-component silicone formulations, it must be ensured that Pt-catalyst (e. g. Catalyst 500 series) and SiH crosslinkers are kept strictly separated. In general, the composition must be selected so that the total formulation contains approximately a double molar excess of SiH groups as compared with vinyl groups.


Physical Form
Clear, colorless liquid
Technical Data
ValueUnitsTest Method / Conditions
SiH Content1.1mmol/g-
Viscosity (at 25°C)500Pa-
Refractive Index (nD²⁰)1.4045--
Density (at 20°C)approx. 1g/cm³-

Regulatory & Compliance

Packaging & Availability

Packaging Type

190 kg drum, 950 kg IBC PE

Storage & Handling

Shelf Life
24 months

Dry, up to 30 °C (86 °F) in sealed containers, do not permanently expose to intensive sunlight.