1321-74-0
Divinyl Benzene
CAS: 1321-74-0
Molecular Formula: C10H10
1321-74-0 - Names and Identifiers
| Name | Divinyl Benzene |
| Synonyms | divinyl-benzen divinylbenzene Divinyl Benzene diethenyl-benzen diethenylbenzene o-Divinylbenzene diethenyl-Benzene Vinylethylbenzene Benzene,diethenyl- Ethylvinyl Benzene benzene,1,2-diethenyl- divinylbenzene mixed isomers divinylbenzene(mixedisomers) Divinylbenzenetechmixedisomers divinylbenzene, mixture of isomers |
| CAS | 1321-74-0 |
| EINECS | 215-325-5 |
| InChI | InChI=1/2C10H10/c1-3-9-5-7-10(4-2)8-6-9;1-3-9-6-5-7-10(4-2)8-9/h2*3-8H,1-2H2 |
| InChIKey | YARNEMCKJLFQHG-UHFFFAOYSA-N |
1321-74-0 - Physico-chemical Properties
| Molecular Formula | C10H10 |
| Molar Mass | 130.19 |
| Density | 0.919g/mLat 20°C |
| Melting Point | -87.1°C |
| Boling Point | 195°C(lit.) |
| Flash Point | 148°F |
| Water Solubility | Miscible with ethanol and ether. Immiscible with water. |
| Solubility | 5mg/l |
| Vapor Presure | 0.9 mm Hg ( 30 °C) |
| Vapor Density | 4.5 (vs air) |
| Appearance | Liquid |
| Specific Gravity | 0.914 |
| Color | Colorless to pale yellow |
| Storage Condition | Store at +2°C to +8°C. |
| 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. |
| Sensitive | Light Sensitive |
| Explosive Limit | 1.1-6.2%(V) |
| Refractive Index | n20/D 1.561(lit.) |
| Physical and Chemical Properties | Colorless liquid, easy to polymerize. Light yellow liquid. boiling point 195 ℃ freezing point -87 ℃ relative density 0.918 solubility insoluble in water, soluble in methanol, ether. |
| Use | Insoluble in water, soluble in methanol, ether. |
1321-74-0 - Risk and Safety
| Risk Codes | R37/38 - Irritating to respiratory system and skin. R41 - Risk of serious damage to eyes R22 - Harmful if swallowed R52/53 - Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S7 - Keep container tightly closed. S23 - Do not breathe vapour. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S39 - Wear eye / face protection. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
| UN IDs | NA 1993 / PGIII |
| WGK Germany | 2 |
| RTECS | CZ9370000 |
| TSCA | Yes |
| HS Code | 29029090 |
| Hazard Class | 9 |
| Packing Group | III |
| Toxicity | LD50 orally in Rabbit: 4100 mg/kg LD50 dermal Rabbit 8000 mg/kg |
1321-74-0 - Upstream Downstream Industry
| Raw Materials | Diethylbenzene (mixture) |
| Downstream Products | Amberlite XAD-16 |
1321-74-0 - Nature
Open Data Verified Data
This product has three isomers, its physical properties are as follows: Three isomers are colorless liquid, easy polymerization. Containing 55% of divinylbenzene is light yellow liquid, freezing point -87 deg C, boiling point of 195 deg C. The relative density was 0. 918. Insoluble in water, soluble in methanol, ether. Flammable. It can self-polymerize at room temperature.
Last Update：2025-06-10 22:55:16
1321-74-0 - Preparation Method
Open Data Verified Data
When ethylene and benzene are alkylated to produce ethylbenzene, mixed diethylbenzene is obtained as a by-product, and the three isomers of diethylbenzene have similar boiling points and are difficult to separate. Therefore, usually mixed diethylbenzene as a raw material, by dehydrogenation to produce O-, m-, p-divinylbenzene.
Last Update：2022-01-01 10:39:42
1321-74-0 - Application
Open Data Verified Data
This product is an important cross-linking agent, can be used as ion exchange resin, polyester resin and polymerization monomer component. It can also be used as a modifier of polystyrene, styrene-butadiene rubber, etc.
Last Update：2025-08-19 16:24:40
1321-74-0 - Safety
Open Data Verified Data
- the toxicity of this product is similar to toluene, rat oral LD50 4040mg/kg. It can stimulate the skin and respiratory tract of human body, and its irritation increases with the increase of temperature. Long-term exposure can cause anemia. When using, avoid inhalation or contact with the skin, such as inadvertent splash into the eyes or skin contact, should be quickly rinsed with lime water or water. Equipment should be closed, the production site should be strengthened ventilation, to prevent running, run, drop, leakage phenomenon. Personal protection should be strengthened.
- packaged in galvanized iron or aluminum barrels, storage period of not more than 3 months, low temperature storage (not more than 20 degrees C). During storage, a polymerization inhibitor [content (900~1100)× 10-6] should be added. Close proximity to fire source is strictly prohibited. Do not hit with iron. According to the provisions of flammable chemicals storage and transportation.
Last Update：2022-01-01 10:39:42
1321-74-0 - Reference Information
| freezing point | -87 ℃ |
| LogP | 3.6 |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| application | divinylbenzene is a hydrocarbon organic substance, which is a very useful crosslinking agent and is widely used in ion exchange resins. Separation of exchange membrane; ABS resin; Polystyrene resin; Unsaturated polyester resin; Synthetic rubber, etc. |
| overview | divinylbenzene is a very useful crosslinking agent, widely used in ion exchange resin, ion exchange membrane, ABS resin, polystyrene resin, unsaturated polyester resin, synthetic rubber and other fields. However, divinylbenzene is extremely reactive. In the distillation process, due to the initiation of metal ions and heat, free radical polymerization is very easy to occur, and the higher the temperature, the faster the polymerization speed. In order to avoid material consumption caused by polymerization, various polymerization inhibitors are often added to prevent free radical polymerization |
| deep processing | a large amount of tar will be produced in the distillation process of divinylbenzene. in addition to polymers and polymerization inhibitors, tar also contains 10%-30% divinylbenzene monomer. if directly discharged, it will not only cause damage to the surrounding environment, but also cause certain economic losses. If divinylbenzene tar is developed and utilized in deep processing, the environment can be protected and economic benefits can be improved. |
| Use | Used as raw material for resin, paint and special rubber Insoluble in water, soluble in methanol and ether. Organic synthesis. Divinylbenzene has two ethylenes, which can generate an insoluble polymer with a three-dimensional structure when copolymerized. Therefore, it is a very useful crosslinking agent, which is widely used in ion exchange resins. Separation of exchange membranes; ABS resin; Polystyrene resin; Unsaturated polyester resin; Synthetic rubber; Wood processing; Carbon processing, etc. |
| Production method | When ethylene and benzene are alkylated to produce ethylbenzene, mixed diethylbenzene is obtained as a by-product. The three isomers of diethylbenzene have similar boiling points and are difficult to separate. Therefore, usually mixed diethylbenzene raw materials are dehydrogenated to produce ortho, m, and p-divinylbenzene. |
| category | flammable liquid |
| toxicity classification | low toxicity |
| acute toxicity | oral-rat LDL0: 9200 mg/kg |
| explosive hazard characteristics | blastable when mixed with air |
| flammability hazard characteristics | flammability; fire scene releases spicy and irritating smoke |
| storage and transportation characteristics | warehouse is low temperature, ventilated and dry; It cannot be kept for a long time. Fire prevention; Store separately from oxidant |
| fire extinguishing agent | carbon dioxide, foam, dry powder |
| occupational standard | TWA 50 mg/m3; STEL 75 mg/m3 |
| auto-ignition temperature | 878 °F |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 19:05:10
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Raw Materials for 1321-74-0
Downstream Products for 1321-74-0