Monoethanolammonium borate

Monoethanolammonium borate (CAS 26038-87-9) is a boron-based amine salt combining ethanolamine and boric acid in a 1:1 ratio.

Where is Monoethanolammonium borate used?

• Metalworking fluids: corrosion protection for ferrous and non-ferrous surfaces while maintaining alkaline pH for cutting and grinding
• Water treatment: pH buffering and corrosion inhibition in recirculating cooling and process water circuits
• Waterborne coatings and primers: flash rust inhibition on metal during application and drying
• Adhesive and sealant systems: buffering capacity during manufacturing, influencing cure behaviour and substrate compatibility
• Both the amine and borate components contribute to metal protection and formulation stability.

Good to know: Buyers should confirm active content and pH specification when evaluating lots; boron concentration is also a key metric for formulation-critical applications.