PBTCA
2-Phosphonobutane -1,2,4-Tricarboxylic Acid
CAS NO37971-36-1
Mol. WT.270.13
Mol. FormulaC7H11O9P
Structure
- Properties
- Specification
- Usage
- Safety
- Package&Storage
PBTCA has low content of phosphoric, has structural features of both phosphoric acid and carboxylic acid group, which enable its excellent scale and corrosion inhibition properties. Its antiscale property under high temperature is far better than that of organophosphines. It can improve zinc salt solubility, has good chlorine oxidation tolerance and good composite synergy.
Items |
Index |
Appearance |
Colorless or light yellow transparent liquid |
Active acid (as PBTC), % |
50.0 min |
Phosphorous acid (as PO33-) % |
0.5 max |
Phosphorous acid (as PO43-) % |
0.2 max |
Density (20℃) g/cm3 |
1.270 min |
pH (1% solution) |
1.5~2.0 |
PBTCA is one of the most effective and widely used agents as scale and corrosion inhibitor. It is the excellent stabilizer for zinc salt as well. It is widely used in circulating cool water system and oilfield refill water system as scale and corrosion inhibitor, suitable to composite with zinc salt and copolymer. It can be used under conditions of high temperature, high hardness, high alkali and high concentration index. In lavation fields, it is used as chelating agent and metal detergent.
PBTCA is usually used together with zinc salt, copolymer, organophosphine, imidazole and other water rreatment chemicals. When used alone, the dosage of 5-15mg/L is preferred.
Acidity. Avoid contact with eye and skin. In case of contact, flush with water immediately.
25kg/250kg net in plastic drum. Storage for twelve months in shady room.