Poly(sodium methacrylate)

polymer

Poly(sodium methacrylate) is a water-soluble synthetic polymer belonging to the polymethacrylate family, characterized by pendant sodium carboxylate groups along the backbone that confer ionic functionality and hydrophilicity. It is widely used in personal care, pharmaceutical, and industrial applications where water absorption, thickening, and ion-binding properties are valuable—particularly in superabsorbent materials, controlled-release drug delivery systems, and cosmetic formulations. Compared to alternative acrylic polymers, the sodium methacrylate structure offers a balance of water solubility and crosslinkable potential, making it especially useful when high absorbency or biocompatibility is needed without the brittleness of heavily crosslinked systems.

superabsorbent polymers (diapers, absorbent pads)pharmaceutical drug deliverycosmetic thickeners and gelswater treatment (ion exchange)adhesives and coatingsmedical wound care dressings

Compliance & Regulations

?UL 94?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Glass Transition Temperature(Tg)
—
K——
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.