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Names | |||
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Other names
Diethylene benzene, DVB, Vinylstyrene
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Identifiers | |||
3D model (
JSmol)
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ChemSpider | |||
ECHA InfoCard | 100.013.932 | ||
EC Number |
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PubChem
CID
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RTECS number |
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UNII |
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UN number | 3252 3254 (stabilized chemical) | ||
CompTox Dashboard (
EPA)
|
|||
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Properties | |||
C10H10 | |||
Molar mass | 130.190 g·mol−1 | ||
Appearance | pale, straw-colored liquid [1] | ||
Density | 0.914 g/mL | ||
Melting point | −66.9 to −52 °C (−88.4 to −61.6 °F; 206.2 to 221.2 K) | ||
Boiling point | 195 °C (383 °F; 468 K) | ||
0.005% (20°C) [1] | |||
Solubility in other solvents | Soluble in ethanol and ether | ||
Vapor pressure | 0.7 mmHg (20°C) [1] | ||
Hazards | |||
Flash point | 76 °C (169 °F; 349 K) | ||
Explosive limits | 1.1%-6.2% [1] | ||
NIOSH (US health exposure limits): | |||
PEL (Permissible)
|
none [1] | ||
REL (Recommended)
|
TWA 10 ppm (50 mg/m3) [1] | ||
IDLH (Immediate danger)
|
N.D. [1] | ||
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
Divinylbenzene (DVB) is an organic compound with the chemical formula C6H4(CH=CH2)2 and structure H2C=CH−C6H4−HC=CH2 (a benzene ring with two vinyl groups as substituents). It is related to styrene (vinylbenzene, C6H5−CH=CH2) by the addition of a second vinyl group. [2] It is a colorless liquid 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. [3]
It is produced by dehydrogenation of diethylbenzene:
Divinylbenzene is usually encountered as a 2:1 mixture of m- and p-divinylbenzene, containing also the corresponding isomers of ethylvinylbenzene.
Styrene and divinylbenzene react 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 and Merrifield resins for peptide synthesis. [3]
These compounds are systematically called diethenylbenzene, although this nomenclature is rarely encountered.
| |||
Names | |||
---|---|---|---|
Other names
Diethylene benzene, DVB, Vinylstyrene
| |||
Identifiers | |||
3D model (
JSmol)
|
|||
ChemSpider | |||
ECHA InfoCard | 100.013.932 | ||
EC Number |
| ||
PubChem
CID
|
|||
RTECS number |
| ||
UNII |
| ||
UN number | 3252 3254 (stabilized chemical) | ||
CompTox Dashboard (
EPA)
|
|||
| |||
| |||
Properties | |||
C10H10 | |||
Molar mass | 130.190 g·mol−1 | ||
Appearance | pale, straw-colored liquid [1] | ||
Density | 0.914 g/mL | ||
Melting point | −66.9 to −52 °C (−88.4 to −61.6 °F; 206.2 to 221.2 K) | ||
Boiling point | 195 °C (383 °F; 468 K) | ||
0.005% (20°C) [1] | |||
Solubility in other solvents | Soluble in ethanol and ether | ||
Vapor pressure | 0.7 mmHg (20°C) [1] | ||
Hazards | |||
Flash point | 76 °C (169 °F; 349 K) | ||
Explosive limits | 1.1%-6.2% [1] | ||
NIOSH (US health exposure limits): | |||
PEL (Permissible)
|
none [1] | ||
REL (Recommended)
|
TWA 10 ppm (50 mg/m3) [1] | ||
IDLH (Immediate danger)
|
N.D. [1] | ||
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
Divinylbenzene (DVB) is an organic compound with the chemical formula C6H4(CH=CH2)2 and structure H2C=CH−C6H4−HC=CH2 (a benzene ring with two vinyl groups as substituents). It is related to styrene (vinylbenzene, C6H5−CH=CH2) by the addition of a second vinyl group. [2] It is a colorless liquid 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. [3]
It is produced by dehydrogenation of diethylbenzene:
Divinylbenzene is usually encountered as a 2:1 mixture of m- and p-divinylbenzene, containing also the corresponding isomers of ethylvinylbenzene.
Styrene and divinylbenzene react 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 and Merrifield resins for peptide synthesis. [3]
These compounds are systematically called diethenylbenzene, although this nomenclature is rarely encountered.