Chemical auxiliary agent HPAA and Corrosion inhibitor HPAA1

2-Hydroxyphosphonoacetic acid is a chemical substance with the molecular formula C2H5O6P, also known as HPAA. It appears as a brown transparent liquid and has a CAS accession number of 23783-26-8; The total phosphorus content of HPAA is much lower than that of traditional organic phosphines HEDP and ATMP, which is in line with the national "low phosphorus" environmental protection policy. The molecular structure of HPAA contains one hydroxyl group, one carboxyl group, and one phosphonic acid group. Compared with traditional organic phosphines HEDP and ATMP, it has good scale inhibition effect. HPAA combined with zinc salts can have a good corrosion inhibition effect, especially suitable for low alkali and low hardness corrosive water quality. Has good high temperature resistance, with a hydrolysis rate of only 8% under high temperature conditions of 200 ° C. HPAA is mainly used as a corrosion and scale inhibitor in open cooling water systems, and has good synergistic effects and compatibility with organic phosphines, copolymers, zinc salts, etc. This product is suitable for water quality with a pH of 7.0-9.5. Especially suitable for low alkali and low hardness corrosive water quality in southern regions. HPAA has good chemical stability, is not easily hydrolyzed, is not easily destroyed by acid and alkali, is safe and reliable to use, non-toxic and pollution-free, can improve the solubility of zinc, and has a strong corrosion inhibition effect. Its corrosion inhibition performance is 5-8 times higher than HEDP and EDTMP. It has excellent performance as an organic corrosion and scale inhibitor composed of low molecular weight polymers.