Surfactants - Anionic Available — Bulk Only

Acrylic Acid/AMPS Copolymer (AA/AMPS)

AA/AMPS Copolymer
CAS 40623-75-4 · Formula C10H17NO6S · MW 279.31 g/mol

A water-soluble acrylic copolymer used as a scale inhibitor and dispersant in water treatment. Copolymers of this class are used in water treatment as scale inhibitors and dispersants, controlling calcium, phosphate, and iron scale in cooling water, boilers, and reverse-osmosis systems.

Request SDS
HS Code
3906.90
At a Glance
Material Family
Surfactants - Anionic
Record Type
Pure compound
Primary Role
Chelation / Sequestration · Viscosity Modification
Solubility
fully miscible with water (typical)
Functional Roles
ACRYLIC ACID/ACRYLAMIDOMETHYL PROPANE SULFONIC ACID COPOLYMER
CHELATINGVISCOSITY CONTROLLING
Applications & Use Cases
  • Scale inhibitor: Controls calcium, phosphate, and iron scale in process water.
  • Dispersant: Disperses particulate and mineral foulants.
  • Water treatment: Cooling-water, boiler, and RO-membrane antiscalant formulations.
Physical Properties
physical_form
viscous liquid (typical, as aqueous solution)
color
colorless to pale yellow / amber (typical)
active_solids
30-50 % (typical, supplier-grade dependent)
pH
2-5 acid form / 6-8 sodium-salt solution (typical)
solubility
fully miscible with water (typical)
specific_gravity
1.10-1.30 (typical, 20 C)
Safety & Handling
Full SDS available on request

A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.

Request SDS →
HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
3906 . 90
Chapter 39
Plastics and articles thereof
Heading 39.06
Internationally harmonized (WCO HS)
Subheading 3906.90
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
40623-75-4
Molecular Formula
C10H17NO6S
Molecular Weight
279.31 g/mol
IUPAC Name
2-methyl-2-(prop-2-enoylamino)propane-1-sulfonic acid;prop-2-enoic acid
INCI Name
ACRYLIC ACID/ACRYLAMIDOMETHYL PROPANE SULFONIC ACID COPOLYMER
PubChem CID
InChI Key
XOHCVEDNEBOCBH-UHFFFAOYSA-N
Synonyms & Trade Names
AA/AMPS Copolymer Acrylic Acid-2-Acrylamido-2-Methylpropane Sulfonic Acid Copolymer 2-Acrylamido-2-methylpropanesulfonic acid / acrylic acid copolymer Poly(acrylic acid-co-AMPS) AA-AMPS scale inhibitor copolymer Sodium acrylate/AMPS copolymer
Full Description

Acrylic acid / 2-acrylamido-2-methylpropanesulfonic acid copolymer (CAS 40623-75-4), AA/AMPS, is a water-soluble anionic acrylic copolymer. Copolymers of this class are used in water treatment as scale inhibitors and dispersants, controlling calcium, phosphate, and iron scale in cooling water, boilers, and reverse-osmosis systems.

Frequently Asked Questions

What is AA/AMPS copolymer used for?

Acrylic acid / 2-acrylamido-2-methylpropanesulfonic acid copolymer (AA/AMPS, CAS 40623-75-4) is a water-soluble anionic acrylic copolymer used in water treatment as a scale inhibitor and dispersant. It controls calcium, phosphate, and iron scale in cooling water, boilers, and reverse-osmosis systems. RawSource supplies it for water-treatment formulation.

How does AA/AMPS work as a scale inhibitor?

The copolymer combines carboxylate (acrylic acid) and sulfonate (AMPS) groups, which adsorb onto mineral nuclei and disperse particulate foulants, suppressing calcium, phosphate, and iron scale and improving tolerance in high-hardness and high-iron waters. Recommended dosage depends on system water chemistry; refer to the technical data sheet.

Is AA/AMPS copolymer water soluble?

Yes. AA/AMPS is a water-soluble anionic copolymer, typically supplied as an aqueous solution for direct dosing into water-treatment formulations. Active solids are confirmed on the Certificate of Analysis.

What is the CAS number and identity of the AA/AMPS copolymer?

The copolymer is identified by CAS 40623-75-4 (acrylic acid / 2-acrylamido-2-methylpropanesulfonic acid copolymer). Molecular weight range and active solids vary by grade and are defined on the lot CoA; specify your target grade when ordering.

How is bulk AA/AMPS copolymer packaged and quoted?

RawSource supplies water-treatment polymers in drums, IBCs/totes, and bulk to formulators. Active solids, packaging, lead time, and pricing are quoted per order; submit volume and destination for a bulk quote, with SDS and CoA on shipment.

Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.