2-膦酸基丁烷-1，2，4-三羧酸（PBTCA）
2-Phosphonobutane-1,2,4-tricatrboxylic acid
別名：1,2,4-三羧酸-2-膦酸基丁烷；PBTC；2-膦酰基-1,2,4-丁烷三羧酸；
膦酰基丁烷三羧酸；
分子式： C7H11O9P 相對分子質量： 270.13
Molecular formula: C7H11O9P Relative molecular weight: 270.13
CAS No. 37971-36-1
結構式：
Structural formula:
1、產品性能Product performance
PBTCA對于硫酸鹽垢有良好的分散作用，由于它具有膦酸和羧酸的結構特性，使其具有良好的阻垢和緩蝕性能，優于常用的有機膦酸，特別在高溫下阻垢性能遠優于常用的有機膦酸，能提高鋅的溶解度，耐氯的氧化性能好，復配協同性好。
PBTCA has good effect of sulphate scale dispersion. With structural features of both c which enable its excellent scale and corrosion inhibition properties, its anti-scale property, especially under high temperature, is far better than that of organic phosphorus acid. It can improve zinc salt solubility, has good chlorine-resistant oxidation and good compound synergism.
2、質量指標 Quality index
| 指標 名稱 Index Name | 指 標 Index |
| 外觀 Appearance | 無色或淡黃色透明液體 clear or clear yellow transparent liquid |
| 活性組分 % Active components % | 50.0±1.0 |
| 亞磷酸（以PO33-計）含量％ ≤ Phosphorous acid （as PO33-） % ≤ | 0.8 |
| 磷酸（以PO43-計）含量％ ≤ Phosphoric acid （as PO43-）% ≤ | 0.5 |
| PH值（1％水溶液） ≤ pH value （1% water solution） ≤ | 3.5±1.0 |
| 密度：（20℃） g/cm3 ≥ Density: （20℃） g/cm3 ≥ | 1.27 |
3、用途 Usage
PBTCA在高效阻垢緩蝕劑復配中應用zui廣，是性能的產品之一，也是鋅鹽的優良穩定劑。廣泛應用于循環冷卻水系統和油田注水系統的緩蝕阻垢，特別適合與鋅鹽、共聚物復配使用，可用于高溫、高硬、高堿及需要高濃縮倍數下運行的場合，PBTCA在洗滌行業中可作螯合劑及金屬清洗劑。
PBTCA is most widely used as a high efficient agent of scale and corrosion inhibitor and one of the best performed products. It is also the excellent stabilizer for zinc salt. It is widely used in circulating cooling water system and oilfield refill water system as scale and corrosion inhibitor, especially suitable to composite with zinc salt and copolymer. It can be used in situations of high temperature, high hardness, high alkalinity and high concentration index. In lavation fields, it is used as chelating agent and metal detergent.
4、使用方法 Usage
PBTCA一般與鋅鹽、共聚物、有機磷、唑類等其它水處理劑復配使用。如單獨使用投加劑量為5～15mg/L。
PBTCA is usually used together with zinc salt, copolymer, organic phosphorus, azoles and other water treatment chemicals. When used alone, the dosage of 5-15mg/L is preferred.
5、包裝與貯存 Packing and storage
本品用塑料桶包裝，每桶30Kg或250Kg。貯存于室內陰涼處。貯存期十二個月。
Pack in 30kg or 250kg plastic drum. Be stored in room shady place for 12 months.
6、安全防護 Safety Protection
PBTCA為酸性液體，應避免與眼睛、皮膚接觸，一旦濺到身上，應立即用大量水沖洗。
Acidity. Avoid contact with eye and skin, once contacted, flush with water.
