MBT (Mercaptobenzothiazole)

Mercaptobenzothiazole is primarily used in the manufacturing of rubber but is also a copper corrosion inhibitor used in many of the same industries as TTA and BTA. This yellow metal corrosion inhibitor will oxidize and deplete, especially in open recirculating systems. Wintrol® MBT provides some protection to steel, cast iron and aluminum.

Common Uses and Applications

Closed-loop Systems

Water Treatment

Engine Coolant 

Product Information

Unlike our other triazole based chemistries for yellow metal protection mercaptobenzothiazole contains sulfur.  MBT is a fast yellow metal passivator which has high thermal degradation comparetively but is less effective against oxidizing biocides compared to the triazole chemistries. 

Available MBT (Mercaptobenzothiazole) Variants