Styrene-divinylbenzene copolymer

Styrene-divinylbenzene copolymer (CAS 9003-70-7) is a crosslinked polymer resin produced by copolymerizing styrene with divinylbenzene into a rigid, porous bead structure.

Where is Styrene-divinylbenzene copolymer used?

• Base matrix for ion exchange resins and chromatographic media
• Water treatment: functionalized into cation and anion exchange resins for demineralization, softening and heavy-metal removal from industrial effluents
• Pharmaceutical purification: backbone of resins for API isolation
• Analytical sample preparation: captures organic compounds from aqueous matrices
• Biotechnology: support matrix in affinity and size-exclusion chromatography columns
• It also serves in chromatographic separation processes.

Good to know: Technical and chromatographic grades are both commercially available; the latter meets tighter specifications for regulated pharmaceutical manufacturing.

Commercial specifications

• Spherical beads in dry or pre-swelled form
• Particle size distributions tailored to specific requirements
• Grades across a range of crosslink densities
• Crosslink density determines pore structure and surface area for downstream functionalization