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Phosphonates Antiscalants, Corrosion Inhibitors and Chelating Agents
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KR-499 Acrylic-Sulfonic Terpolymer

CAS No. 71050-62-9 EINECS No. 615-245-4
Molecular Formula (C3H4O2.H3O2P.Na)n Molecular Weight
Structural Formula


Product Features

KR-499 Acrylic-Sulfonic Terpolymer is a low molecular weight, multifunctional, organic polymer for deposit control in industrial water treatment.

KR-499 Acrylic-Sulfonic Terpolymer is a unique combination, offers effective calcium carbonate & calcium phosphate scale control, Iron oxide and particle dispersancy, corrosion inhibition properties, the low phosphorous content helps to hold high levels of orthophosphate in solution.

KR-499 Acrylic-Sulfonic Terpolymer can replace existing copolymers in formulations allowing the formulator to reduce or eliminate other formulation components.

Technical Specification

Parameter Standard
Appearance Clear, pale yellow liquid
Solid content, % 48.0 min
Total phosphor (as PO43-), % 1.0 min
Density (20℃), g/cm3 1.15 min
pH(1% water solution) 1.5 - 3.5

Applications & Usage

KR-499 Acrylic-Sulfonic Terpolymer is used in open evaporative cooling systems. Because of its polymer/phosphonate characteristics and halogen stability, KR-499 performs many functions in a water treatment formulation.

Package & Storage

25kg Bag 200L Drum 1000L IBC ISO Tank
200L Drum packaging
Storage for 10 months in shady room and dry place.

Hazard & Safety Precaution

Hazard Information Satety Precaution

Not regulated

Wear protective gloves Wear protective goggles Wear protective clothing

Once contacted with eye and skin, flush with plenty of clean water.

Alternative Name / Synonyms

  1. KR-499;
  2. Acrylic-Sulfonic Terpolymer;