Si 363

Si 363 is a bifunctional organosilane chemical used in the reinforcement of rubber articles, especially tires. SI363 is the trade name of a silane bonding agent in the trialkoxymercaptoalkyl-silane class and of formula SH(CH₂)H₃Si(OCHH₂CHH₃)(O(CHH₂CHH₂O)H₅(CHH₂)H₁₂CHH₃)H₂.^[1]

When applied to tires, Si 363 reduces rolling resistance,^[1] thus leading to increased fuel economy. Both alkoxsilicon and sulfur entities are present within its molecular structure.