divinylbenzene

Divinylbenzene (DVB) is an aromatic hydrocarbon consisting of a benzene ring bearing two vinyl substituents. Its molecular formula is C10H10. There are three structural isomers: o-divinylbenzene (1,2-), m-divinylbenzene (1,3-), and p-divinylbenzene (1,4-). Commercial DVB is typically sold as mixtures of these isomers; the exact composition varies by supplier.

DVB is typically a colorless to pale yellow liquid or solid at room temperature, with a characteristic odor. It is a reactive vinyl monomer that readily undergoes radical polymerization; storage requires inhibitors to prevent premature curing. It is only sparingly soluble in water but dissolves in many organic solvents.

The principal use of DVB is as a crosslinking agent in polymer chemistry. When copolymerized with styrene or other monomers, it yields crosslinked polymers and resins widely used in ion-exchange resins, adsorption media, and chromatographic supports. DVB-containing resins are employed in water treatment and various separations, and the crosslink density can be tuned by the DVB content to modify mechanical properties and chemical resistance.

Safety and handling: DVB is flammable and can irritate the skin, eyes, and respiratory system. It polymerizes exothermically upon exposure to heat, light, or impurities, so it is stabilized with polymerization inhibitors during storage. It should be handled with appropriate safety precautions, stored away from sources of heat, and kept under inert or controlled conditions to prevent premature polymerization.