What is the purity of AA/AMPS copolymer?

Purity % does not apply to a copolymer — it is specified by solids/active content and molecular weight, with limits on free monomer, density and pH.

Which CAS goes on the documents?

40623-75-4 for the free-acid copolymer; a sodium-salt grade may carry a different identifier.

Why choose it over a plain polyacrylate?

The AMPS sulfonate groups give higher calcium tolerance and better performance in high-hardness, high-pH water.

Acrylic Acid / AMPS Copolymer

CAS 40623-75-4 AA + AMPS copolymer

CAS number: 40623-75-4
Formula: AA + AMPS copolymer
Molar mass: No single formula · MW ~1,000–20,000 (by grade)
Appearance: Colourless to light-yellow transparent liquid.

The acrylic acid/AMPS copolymer is a sulfonated antiscalant and dispersant with high calcium and alkaline tolerance for cooling-water, RO and oilfield systems. Ehlinar sources it by active content and molecular weight; as a copolymer it is defined by solids and molecular weight rather than a purity figure.

Applications

Cooling water & ROAntiscalant/dispersant for CaCO₃, Ca₃(PO₄)₂ and zinc scale, including high-hardness/high-pH systems

OilfieldInjection and drilling-fluid additive

Steel & metallurgyIron-oxide dispersion

DetergentsDispersant additive

Grades & packaging

Defined by solids/active content (around 40% minimum), molecular weight, free-monomer level (as AA ≤0.8%), density (≥1.15) and pH (3.5–4.5 at 1%) rather than a purity figure; grades differ by monomer ratio and neutralisation.

200 L drums (~250 kg)
1000 L IBC (~1250 kg)
Bulk

Also known as

AA/AMPS · Sulfonated polyacrylic acid copolymer · Poly(AA-co-AMPS) · Acumer 2000 · Aquatreat AR-540

Frequently asked questions

What is the purity of AA/AMPS copolymer?: Purity % does not apply to a copolymer — it is specified by solids/active content and molecular weight, with limits on free monomer, density and pH.
Which CAS goes on the documents?: 40623-75-4 for the free-acid copolymer; a sodium-salt grade may carry a different identifier.
Why choose it over a plain polyacrylate?: The AMPS sulfonate groups give higher calcium tolerance and better performance in high-hardness, high-pH water.

Enquire about Acrylic Acid / AMPS Copolymer

Related products

Figures and identifiers here are compiled from public references and provided for general information; they are indicative, not a specification. See all products.