2-Hydroxyphosphonocarboxylic Acid (HPAA)

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2-Hydroxyphosphonocarboxylic Acid (HPAA)
Posting date : Oct 12, 2007
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2-Hydroxyphosphonocarboxylic Acid (HPAA) CAS No 23783-26-8 Molecular Formula: C2H5O6P Molecularweight: 156 Structural Formula: Properties: HPAA is chemically stable, hard to be hydrolyzed, hard to be destroyed by acid or alkali, safety in use, no toxicity, no pollution. HPAA can improve zinc solubility. Its corrosion inhibition ability is 5-8 times better than that of HEDP and EDTMP. When built with low molecular polymers, its corrosion inhibition effect is even better. Specification: items index Appearance Dark umber transparent viscous liquid Solid content % 47.0-50.0 Phosphorous acid(as PO33-)% 4.0 max Density (20℃)g/cm3 1.30 min pH(1% solution) 1.0-3.0 Usage: HPAA is mainly used as cathode corrosion inhibitor in oilfield refill water system in fields such as steel & iron, petrochemcal, power plant and medical industries. When built with zinc salt, the effect is even better.

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