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SiSiB® PC7500

Vinyl Tris(methylethylketoxime)silane (VOS).
Synonym: Винил-трис-(метил-этил-кетоксим)-силан
Vinyl tris (MEKO) silane

Countertype of Hanse OX20, Honeywell OS2000

Chemical Structure


SiSiB® PC7500 is a clear and almost colorless fluid with a typical smell (MEKO). It readily hydrolyzes upon contact with moisture.

Typical Physical Properties

Chemical Name: Vinyltris(methylethylketoxime)silane
CAS No.: 2224-33-1
EINECS No.: 218-747-8
Empirical Formula: C14H27N3O3Si
Molecular Weight: 313.47
Boiling Point: 115°C [0.12mmHg]
Flash Point: 63°C
Color and Appearance: Colorless or yellowish transparent liquid
Density [25°C]: 0.990
Refractive Index [25°C]: 1.4635 [25°C]
Purity: 97.0% by GC


SiSiB® PC7500 is used as a neutral curing agent in silicone sealant formulations. In most cases PC7500 is used in combination with methyloxime silane (PC7130). Compared to formulations based on methyloxime silanes only, the use of combinations containing methyl- and vinyloxime silanes leads to a shorter skin formation time of the silicone sealant without a reduction of the curing time. The ability of the sealant to withstand stress early, required for a certain elasticity and tear resistance, is achieved.


Net weight 200Kg steel drum or 950Kg IBC container, for more details, please visit Packing Centre.

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