HPAA
用做金屬的陰極緩蝕劑
HPAA的別名是膦醯基羥基乙酸。化學穩定性好,不易水解,不易被酸鹼所破壞,使用安全可靠。是繼HEDP、ATMP(第一代有機膦酸)和PBTC(PBTCA)第二代有機膦酸之後開發出的第三代有機膦酸,由於HPAA分子結構比其他有機膦酸多了一個羧酸,因此具有極強的緩蝕阻垢性能,尤其是緩蝕性能比HEDP,EDTMPS性能高5-8倍,適合做超硬度易腐蝕、高濃度的水的緩蝕劑。
2-羥基膦醯基乙酸 HPAA
2-Hydroxyphosphonocarboxylic Acid
【CAS】 23783-26-8
別 名:膦醯基羥基乙酸
分子式 C2H5O6P 相對分子質量:156
結構式:
一、產品性能
本品化學穩定性好,不易水解,不易被酸鹼所破壞,使用安全可靠,無毒無污染,能提高鋅的溶解度,具有極強的緩蝕作用,其緩蝕性能比HEDP、EDTMP高5~8倍。它與低分子量的聚合物一起組成的有機緩蝕阻垢劑性能優良。
二、質量指標
三、應用範圍與使用方法
四、包裝與儲存
CAS No. 23783-26-8 Molecular Formula: C2H5O6P Molecular weight: 156 Structural Formula:
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.
items | index |
Appearance | Dark umber transparent viscous liquid |
Solid content % | 47.0-50.0 |
Phosphorous acid(as PO3)% | 4.0 max |
Density (20℃)g/cm | 1.30 min |
pH(1% solution) | 1.0-3.0 |
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.
Normally In 250kg net Plastic Drum, IBC drum can also be used as required. Storage for one year in room shady and dry place.