REAXIS® C220 (Monobutyltin Tris-(2-Ethylhexanoate)) is a liquid organotin homogenous catalyst that is used primarily as an esterification catalyst. Alternatively, but less common, REAXIS® C220 can be used as a polyurethane catalyst. REAXIS® C220 is a monobutyltin -based organotin that is lower in toxicity compared to dibutyl-based organotins. Of the commonly…