2-Phosphonobutane-1,2,4-Tricarboxylic Acid (PBTCA)
CAS Number: 37971-36-1
PBTCA combines both phosphonate and carboxylate functional groups, giving it dual scale inhibition and dispersancy performance in industrial water systems. It is especially effective in high-pH and high-alkalinity cooling water systems where conventional phosphonates may precipitate. PBTCA also exhibits synergistic corrosion inhibition when used with zinc salts and azoles.
Technical Specifications
| density | 1.20–1.25 g/cm³ |
| chloride | ≤1% |
| appearance | Light yellow liquid |
| activeContent | ≥50% |
| pH (1% solution) | 2.0 |
Applications
- High-alkalinity cooling water treatment
- Calcium carbonate and calcium phosphate scale inhibition
- Dispersant for silt and iron oxide
- Synergistic corrosion inhibition programs
- Industrial process water treatment
Key Features
- Stable at high pH without precipitation
- Dual functionality: scale inhibition and dispersancy
- Superior performance under high-alkalinity conditions
- Excellent synergy with zinc and azole corrosion inhibitors
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CAS Number
37971-36-1
Category
Water Treatment ChemicalsAvailability
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