Poly(sodium acrylate)

polymer

Poly(sodium acrylate) is a water-soluble synthetic polymer belonging to the polyacrylate family, characterized by pendant sodium carboxylate groups along the backbone. It is widely used in absorbent applications—most notably in superabsorbent polymers (SAPs) for disposable diapers, hygiene products, and agricultural water retention—where its exceptional capacity to absorb and retain aqueous solutions makes it the material of choice over competing cellulose-based or polyacrylamide alternatives. Engineers select this polymer for applications requiring high swelling capacity, biocompatibility, and predictable degradation; its ionic character also enables use in viscosity-control additives, thickeners, and drag-reduction applications in aqueous systems.

superabsorbent polymers (diapers, hygiene)agricultural soil amendmentsaqueous thickeners and rheology modifierswater-retention gelsdrag-reduction additivesbiomedical hydrogels

Compliance & Regulations

?UL 94?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Glass Transition Temperature(Tg)
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°F——
Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

Safety & Biocompatibility

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.
Poly(sodium acrylate) — Properties & Data | MatWorld