AA/AMPS Copolymer
High-performance copolymer containing strongly ionizable sulfonic acid groups (–SO₃H) and carboxylic groups. Unmatched dispersancy against calcium phosphate, calcium phosphonate, and zinc hydroxide precipitates in severe alkaline recirculating cooling water.
Technical Specification Target
Sulfonated Electrostatic Repulsion Dynamics
The bulky sulfonate groups on AMPS remain fully ionized even at low pH and in high-salinity brines. They impart strong negative zeta potential charges to colloidal particles, keeping calcium phosphate, iron silt, and zinc flocs permanently dispersed.
Unlike ordinary homopolymers that fail in the presence of soluble iron (>1 ppm Fe), AA/AMPS prevents catastrophic iron-phosphate deposition on heat transfer tubes.
Standard Industrial Dosage
| Application | Recommended Dosing |
|---|---|
| High Stress Cooling Towers (Phosphate Programs) | 8.0 – 20.0 ppm |
| Oilfield Waterflooding & Reinjection | 10.0 – 30.0 ppm |
| Boiler Water Sludge Conditioning | 10.0 – 25.0 ppm |
| RO Antiscalant Formulations | 3.0 – 8.0 ppm |
Packaging, Handling & Storage
- Packaging Options: 60 kg carboys, 250 kg virgin HDPE drums, 1,250 kg IBC totes, and road tankers.
- Storage Conditions: Store in tightly sealed containers in a dry, ventilated area away from direct sunlight.
- Shelf Life: 24 months in sealed original packaging.
- Handling Safety: Mildly acidic. Standard PPE (gloves, safety goggles) required.
Frequently Asked Questions: AA/AMPS Copolymer
Expert technical answers on dosing, chemistry, handling, and application performance.
Q1. What is AA/AMPS Copolymer and why is it considered the best phosphate dispersant?
AA/AMPS (Acrylic Acid / 2-Acrylamido-2-Methylpropane Sulfonic Acid, CAS 40623-75-3) incorporates strongly polarized sulfonate groups that deliver unmatched dispersion of calcium phosphate, zinc hydroxide, and iron oxide.
Q2. What is the typical dosage of AA/AMPS in industrial cooling towers?
In high-stress cooling towers using phosphate or zinc treatment programs, typical continuous dosing is 8.0 to 20.0 ppm active.
Q3. What is the active concentration and pH of ZEELCHEM™ 3100?
ZEELCHEM™ 3100 contains ≥ 40.0% active solid copolymer with specific gravity 1.15–1.22 g/cm³ and pH (1% aqueous) 2.5–4.5.