基本信息
2-羥基膦醯基乙酸 HPAA
HPAA分子結構式別名： 膦醯基羥基乙酸 HPAA英文名：2-Hydroxyphosphonocarboxylic Acid (HPAA)
CAS No. 23783-26-8
性質
HPAA化學結構中同含有一個膦基，一個羧基和一個羥基，化學穩定性好不易水解，不
易被酸鹼所破壞，與常用的HEDP、ATMP相比具有良好的阻垢緩蝕效果，尤其在軟水系統有較好的
防腐緩蝕性能。與常用水理復配有良好的相溶性和協同性。HPAA與其它有機膦酸鹽水處理劑相比
含磷量低，符合環保低磷的要求，並且毒性低，較易為環保所接受。
指 標
| 項 目 | 指 標 |
| 外 觀 | 深紅棕色液體 |
| 固含量 % | 47～50 |
| 亞磷酸（以PO3計）% ≤ | 4.0 |
| 密度（20℃）g/cm≥ | 1.30 |
| PH值(1%水溶液) | 1～3 |
用途
HPAA主要用於敞開式冷卻水系統作阻垢緩蝕劑。廣泛套用於鋼鐵、石化、電力醫藥等行業的
循環冷卻水系統的緩蝕阻垢。適合用作我國南方低硬度、易腐蝕水質的緩蝕劑，與鋅鹽復配效果更
佳。
使用方法
本品一般與馬來酸酐—丙烯酸共聚物複合使用,同時亦可以同其他有機磷藥劑復配使用，這樣
適用水質範圍更寬。單獨投加時一般劑量為5-20mg/L。
四 、包裝與貯存
塑膠桶包裝，每桶25kg 200Kg。貯於室內陰涼處，保質期一年。
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2-Hydroxyphosphonocarboxylic Acid (HPAA)
CAS No 23783-26-8
Molecular Formula: C2H5O6P Molecular weight: 156
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 PO3）% | 4.0 max |
| Density （20℃）g/cm | 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.
Package and Storage:
Normally In 250kg net Plastic Drum, IBC drum can also be used as required. Storage for one year in room shady and dry place.
Keywords: 2-Hydroxyphosphonocarboxylic Acid(HPAA),HPAA China
