Tricarboxylic Acid Rust Inhibitor

XP50/65/85 Triacid Rust Inhibitor

Product Overview XP50/65/85 is a ternary organic polycarboxylic acid, an excellent, green, and environmentally friendly water-based rust inhibitor. It serves as an ash-free rust inhibitor for various aqueous fluids, providing excellent rust prevention for cast iron materials. It is nitrite-free, low-foaming, and has strong resistance to hard water, delivering outstanding performance even in areas with poor water quality.

CAS Number: 80584-91-4


Applications · When neutralized with alkali/alkanolamine, it becomes a highly effective corrosion inhibitor
· Can be used in all types of water-based metalworking fluids (semi-synthetic and synthetic fluids)
· Suitable for high-water-based hydraulic fluids (HFC)
· Used in engines and other cooling systems

Performance Features
· Highly effective rust inhibition without causing aluminum corrosion
· Low foaming and excellent air release properties
· Hard water resistance up to 2000ppm
· Applicable in systems containing multiple metals
· Does not generate nitrosamines
· Compatible with polyethers and borate esters


Technical Specifications
Product XP50                XP65               XP85
Appearance White wet cake White granular White granules & powder
Active content/(%) 50±1 65±1 85±1
Acid value/(mg KOH/g) 100% content 340-380
Chloride ion content/(ppm) 100% content ≦380ppm
Solution appearance (MEA/TEA /MDEA + tap water) Clear solution Clear solution Clear solution