Divinylbenzene

Divinylbenzene
Divinylbenzene
Identifiers
CAS number 1321-74-0
EC number 215-325-5
Properties
Molecular formula C10H10
Molar mass 130.19 g mol−1
Melting point

-66.9 to -52°C
Boiling point

195°C
Solubility in water Insoluble
Solubility in other solvents Insoluble in water
Soluble in ethanol and ether
Hazards
Flash point 76°C
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Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Divinylbenzene (DVB) consists of a benzene ring bonded to two vinyl groups. It is related to styrene (vinylbenzene) by the addition of a second vinyl group.[1] Divinylbenzene, as it is usually encountered, is a 2:1 mixture of m- and p-divinylbenzene, containing also the corresponding ethylvinylbenzene isomers. It is manufactured by the thermal dehydrogenation of isomeric diethylbenzenes. Under synthesis conditions, o-divinylbenzene converts to naphthalene and thus is not a component of the usual mixtures of DVB.[2]

Applications

When reacted together with styrene, divinylbenzene can be used as a reactive monomer in polyester resins. Styrene and divinylbenzene react together to form the copolymer styrene-divinylbenzene, S-DVB or Sty-DVB. The resulting cross-linked polymer is mainly used for the production of ion exchange resin.[2]

Density is 0.914 g/mL

Nomenclature

See also: Arene substitution patterns Divinylbenzene can exist in the form of 3 structural isomers that differ with respect to the positioning of the vinyl groups.

  • Ortho: variously known as 1,2-diethenylbenzene, 1,2-divinylbenzene, o-vinylstyrene, o-divinylbenzene
  • Meta: known as 1,3-diethenylbenzene, 1,3-divinylbenzene, m-vinylstyrene, m-divinylbenzene
  • Para: known as 1,4-diethenylbenzene, 1,4-divinylbenzene, p-vinylstyrene, p-divinylbenzene.

These compounds are systematically called as diethenylbenzene, although this nomenclature is rarely encountered.

References

  1. ^ CRC Handbook of Chemistry and Physics 65Th Ed.
  2. ^ a b Denis H. James William M. Castor, “Styrene” in Ullmann’s Encyclopedia of Industrial Chemistry, Wiley-VCH, Weinheim, 2005.

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Look at other dictionaries:

  • divinylbenzene — [dī vī΄nəl ben′zēn΄] n. [ DI 1 + VINYL + BENZENE] an unsaturated aromatic monomer, C6H4 (CH:CH2) 2, existing in three isomeric forms: used to produce special synthetic rubbers, ion exchange resins, etc …   English World dictionary

  • Divinylbenzène — Le divinylbenzène (ou diéthénylbenzène en nomenclature systématique) est un hydrocarbure aromatique de formule C10H10. Comme son nom l indique, il est constitué d un noyau de benzène substitué par deux groupements vinyle (–CH=CH2). Il existe… …   Wikipédia en Français

  • divinylbenzene — /duy vuyn l ben zeen, ben zeen /, n. Chem. a clear liquid, C10H10, easily polymerized, used in the manufacture of rubbers, drying oils, ion exchange resins, and polyesters. Also called vinylstyrene. [DI 1 + VINYL + BENZENE] * * * …   Universalium

  • divinylbenzene — noun Any of three isomeric vinyl derivatives of benzene that are used to make copolymers with styrene …   Wiktionary

  • divinylbenzene — di·vi·nyl·ben·zene (di″vi″nəl benґzēn) a toxic liquid hydrocarbon, C6H4(CH CH2)2, a monomer used in polymerization reactions …   Medical dictionary

  • divinylbenzene — di·vi·nyl·benzene …   English syllables

  • divinylbenzene — “+ noun Etymology: divinyl (I) + benzene : a liquid hydrocarbon C6H4(CH−CH2)2 obtained usually as a mixture containing the ortho, meta, and para isomers and used in polymerization (as with styrene for making ion exchange resins) * * * /duy vuyn l …   Useful english dictionary

  • DVB — divinylbenzene …   Medical dictionary

  • DVB — • divinylbenzene …   Dictionary of medical acronyms & abbreviations

  • ion-exchange reaction — ▪ chemical reaction Introduction       any of a class of chemical reactions between two substances (each consisting of positively and negatively charged species called ions (ion)) that involves an exchange of one or more ionic components.… …   Universalium

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