Sodium 2-mercaptobenzothiazole

Sodium 2-mercaptobenzothiazole (CAS 2492-26-4), also called Sodium MBT or Na-MBT, is the water-soluble sodium salt form of mercaptobenzothiazole.

Where is Sodium 2-mercaptobenzothiazole used?

• Metalworking and cutting fluids: protects non-ferrous metals, particularly copper and brass, from corrosion during machining and storage
• Water treatment: inhibits metal corrosion in cooling towers and closed-loop circuits with copper alloy components
• Automotive antifreeze and coolants: copper and brass corrosion inhibitor
• Industrial fluids, rubber latex processing and coatings: preservative and biocide
• Unlike its parent compound, it dissolves readily in aqueous systems.

Good to know: Unlike its parent compound, it dissolves readily in aqueous systems, making it the preferred form for liquid formulations requiring metal protection or microbial control.

Commercial specifications

• White to off-white powder or aqueous solution, typically at 50% concentration
• Technical grade for industrial applications; higher-purity grades for specialty formulations
• Packaging: bags, drums and intermediate bulk containers