T 2113 (OTTO) Triethoxyvinylsilane, 97% Cas 78-08-0 - used as cross-linking agents during the manufacture of cross-linked polyethylene (PEX). The alkoxysilane moiety is reactive toward water, and in the presence of moisture, it forms silicon-oxygen-silicon bonds that cross-link the material to cure it. T 2113 (OTTO) Triethoxyvinylsilane, 97% Cas 78-08-0 - used as electrical insulation in some kinds of cables and for water pipe in under-floor heating installations.