Corrosion inhibitors for metalworking fluids and VCI packaging
Yellow-metal protection in soluble-oil, semi-synthetic, and synthetic metalworking fluids, and in the VCI papers and films that ship bright metal.
Yellow-metal protection in soluble-oil, semi-synthetic, and synthetic metalworking fluids, and in the VCI papers and films that ship bright metal.
Metalworking and protective packaging share a problem: a freshly worked or freshly machined metal surface corrodes fast, and copper and brass parts tarnish and pit before the next operation. Benzotriazole, tolyltriazole, and 2-mercaptobenzothiazole are the inhibitors that keep nonferrous metal protected in both settings.
Soluble-oil, semi-synthetic, and synthetic metalworking fluids run past copper, brass, and bronze in machine components, fittings, and the parts being cut. The fluid has to protect those yellow metals in the sump and on the workpiece between operations.
Triazole inhibitors handle the yellow-metal side. Benzotriazole and tolyltriazole passivate copper and brass in the fluid, and tolyltriazole's better thermal and chlorine stability helps in fluids that run hot or see harsh water. 2-mercaptobenzothiazole (MBT, CAS 149-30-4) is also used here: it forms an insoluble film on copper and other non-ferrous metals and is a long-standing nonferrous inhibitor in water-miscible fluids. For severe-duty and fully synthetic fluids, a 1,3,4-thiadiazole (DMTD-type) deactivator can carry both copper protection and extreme-pressure performance in one additive.
Vapor-corrosion-inhibitor packaging protects metal that no one will treat directly, parts wrapped for transport and storage. Benzotriazole is a known volatile corrosion inhibitor for copper. Built into VCI papers and films, it keeps copper and brass surfaces bright through shipping and storage, so parts arrive without tarnish or surface corrosion. The same anti-tarnish action makes benzotriazole a common choice for protecting silver and copper, in both packaging and solution.
For metalworking and VCI work, P.A.T. Products supplies benzotriazole and tolyltriazole as solid 99% granular and as sodium-salt liquids, plus MBT for nonferrous protection. We stock in North American warehouses and ship across the United States, Canada, and Mexico, with samples typically out the same business day. TDS, SDS, and a Certificate of Analysis per lot are available, with REACH statements on request. Tell us the fluid system or the packaging line you are formulating, and we will recommend the right inhibitor and form and send a sample.
Benzotriazole and tolyltriazole passivate copper and brass in the fluid, 2-mercaptobenzothiazole (MBT) is a long-standing nonferrous inhibitor in water-miscible fluids, and a 1,3,4-thiadiazole deactivator suits severe-duty and synthetic fluids where extreme-pressure performance matters too.
Benzotriazole is a volatile corrosion inhibitor for copper. Built into VCI papers and films, it keeps copper and brass surfaces bright through shipping and storage without direct treatment of the part.
Yes. Benzotriazole, tolyltriazole, and MBT samples, in solid or liquid form as applicable, typically go out the same business day, with TDS, SDS, and a Certificate of Analysis per lot.