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Divinylbenzene

Basic information Description Physical properties Uses Reference Safety Related Supplier

Divinylbenzene Basic information

Product Name:
Divinylbenzene
CAS:
1321-74-0
MF:
C10H10
MW:
130.19
EINECS:
215-325-5
Mol File:
1321-74-0.mol
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Divinylbenzene Chemical Properties

Melting point:
-87.1°C
Boiling point:
195 °C(lit.)
Density 
0.919 g/mL at 20 °C
vapor density 
4.5 (vs air)
vapor pressure 
0.9 mm Hg ( 30 °C)
refractive index 
n20/D 1.561(lit.)
Flash point:
148 °F
storage temp. 
2-8°C
solubility 
5mg/l
form 
Liquid
Specific Gravity
0.914
color 
Colorless to pale yellow
explosive limit
1.1-6.2%(V)
Water Solubility 
Miscible with ethanol and ether. Immiscible with water.
FreezingPoint 
-87℃
Sensitive 
Light Sensitive
Stability:
Stable in the presence of added inhibitor, but may polymerize in the absence of inhibitor. Light and heat sensitive. Incompatible with heavy metal salts, oxidizing agents, acids.
InChIKey
YARNEMCKJLFQHG-UHFFFAOYSA-N
CAS DataBase Reference
1321-74-0(CAS DataBase Reference)
EPA Substance Registry System
Divinylbenzene (1321-74-0)
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Safety Information

Hazard Codes 
Xi,Xn
Risk Statements 
37/38-41-22-52/53
Safety Statements 
7-23-26-36-45-39-61
RIDADR 
NA 1993 / PGIII
WGK Germany 
2
RTECS 
CZ9370000
Autoignition Temperature
878 °F
TSCA 
Yes
HazardClass 
9
PackingGroup 
III
HS Code 
29029090
Hazardous Substances Data
1321-74-0(Hazardous Substances Data)
Toxicity
LD50 orally in Rabbit: 4100 mg/kg LD50 dermal Rabbit 8000 mg/kg

MSDS

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Divinylbenzene Usage And Synthesis

Description

Divinylbenzene is a clear yellow liquid with an aromatic odour. It is a highly flammable and reactive chemical, and the liquid and vapour are combustible. It is incompatible with strong acids and oxidising agents and peroxides. Divinylbenzene reacts vigorously with strong oxidising agents. It also reacts exothermically with both acids and bases, with reducing agents (such as alkali metals and hydrides), and release gaseous hydrogen. May react exothermically with both acids and bases or initiators undergo exothermic polymerisation. It is an extremely versatile chemical cross-linking agent used to improve polymer properties. Divinylbenzene has extensive industrial applications for example, in the manufacture of adhesives, plastics, elastomers, ceramics, biological materials, catalysts, membranes, pharmaceuticals, specialty polymers, and ion exchange resins, as coatings, divinyl benzene has been reported to improve surface properties of rubber goods for biomedical applications, used in photocurable protective coatings for wood, metal, glass, and plastic materials.

Physical properties

Divinylbenzene is a water-white to straw colored liquid. Slightly less dense than water and insoluble in water. Vapors may be toxic. Used in making rubber.Synthetic rubber is any one of a group of man-made elastomers that approximate one or more of the properties of natural rubber(polyisoprene). Divinylbenzene has been used in Styrene-Butadiene copolymers (SBR) as adhesives and as processing aids in the extrusion of general purpose rubbers. Rubbers used as impact modifiers such as Methacrylate-Butadiene-Styrene (MBS) have been improved with the inclusion of Divinylbenzene.

Uses

Divinylbenzene (DVB) is an extremelyversatile cross-linking agent that also improves polymer properties. it has been used to manufacture adhesives,plastics, elastomers, ceramics, biologicalmaterials, coatings, catalysts, membranes, pharmaceuticals, specialty polymers, and ion exchange resins.
DVB has been found to improve the hightemperature strength of adhesives used tobond aluminum to aluminum. Used in anacrylic hydrosol to bond Bakelite resin andpolyester film, DVB was found to increasecreep rupture time dramatically. DVB hasfound utility in cross-linked styrene/butadienepolymers used for caulks and mastics for theconstruction industry.
DVB has been used in the production ofreversed-phase packings for liquidchromatography. Highly cross-linkedpolystyrene packings have been shown tofunction under extreme conditions of highpressures and temperatures. Ion exchangechromatography (IEC) is applicable to theseparation of almost any type of chargedmolecule, from large proteins to smallnucleotides and amino acids.

Reference

  1. F. C. Huang, C. H. Ke, C. Y. Kao, W. C. Lee, Preparation and application of partially porous poly(styrene‐divinylbenzene) particles for lipase immobilization, Journal of Applied Polymer Science, 2001, vol. 80, pp. 39-46
  2. Teresa Norber-King, Toxicity Reduction and Toxicity Identification Evaluation for effluents, ambient waters, and other aqueous media, 2001, ISBN 1-880611-64-3

Chemical Properties

A water-white to straw colored liquid. Slightly less dense than water and insoluble in water. Flash point below 141°F. Vapors may be toxic. Used in making rubber.

Air & Water Reactions

Flammable. Insoluble in water.

Reactivity Profile

Divinylbenzene may react vigorously with strong oxidizing agents. Can react exothermically with reducing agents (such as alkali metals and hydrides) to release gaseous hydrogen. May react exothermically with both acids and bases. May in the presence of various catalysts (such as acids) or initiators undergo exothermic polymerization. Inhibited by presence of an additive. When uninhibited violent polymerization may occur . Substitution at the benzene nucleus occurs by halogenation (acid catalyst), nitration, sulfonation, and the Friedel-Crafts reaction.

Fire Hazard

Divinylbenzene is combustible.

Safety Profile

Mildly toxic by ingestion. An eye irritant. Combustible. When heated to decomposition it emits acrid smoke and irritating fumes.

Purification Methods

Purify divinylbenzene by dissolving in Et2O, shaking with H2O, drying over CaCl2, filtering, evaporating and distilling in vacuo. It polymerises within 2-3days unless 4-tertbutylcatechol (0.05%) is added as stabilizer. [Fries & Bestian Chem Ber 69 715 1936, Beilstein 5 III 1366.]

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SHANGHAI BANGCHENG CHEMICAL Co.,Ltd. Gold
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Shanghai Aladdin Bio-Chem Technology Co.,LTD Gold
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JinJinLe Chemical Gold
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10106090
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Tel:
18817486326
Email:
3237528851@qq.com
Basic information Description Physical properties Uses Reference Safety Related Supplier