Product Name: 2-Phosphonobutane -1,2,4-Tricarboxylic Acid(PBTCA) 50% Synonyms : PBTCA 50% M.F.: C7H11O9PCAS No.: 37971-36-1 Performance Water Treatment chemical PBTCA, a good corrosion inhibitors, is widely used in circulating cool water system and oilfield water injection system antifouling treatment. Water Treatment chemical PBTCA is used as a corrosion inhibitor for industrial water treatment. This product has excellent complexing ability with Ca2 +, Zn2 +, Cu2 +, Mg2 +. The suitable PH range is from 7.0 to 9.5. It can operate at high temperature, high hardness, and high alkalinity conditions. It allows coolingwater concentration factor increased to seven or more.