Styrene solvent (SM), also known as styrene monomer, is an important industrial chemical used primarily as a building block in the production of plastics, synthetic rubber, and resins.
What is Styrene Solvent (SM)?
Styrene Monomer (SM), with CAS number 100-42-5, is formed by replacing one hydrogen atom in a benzene molecule with a vinyl group. At room temperature, it typically appears as a liquid styrene, a colorless, oily substance with an aromatic odor.
Styrene has a freezing point of -30.6°C, a boiling point of 145°C, and a flash point of 31.11°C. In specific polymerized forms, solid styrene can also be encountered in industrial applications, particularly in resin blocks or pellets.
| Product Name | Styrene Solvent (SM) |
| Molecular Formula | C8H8 |
| UN No. | 2055 |
| HS No. | 2902500000 |
| CAS No. | 100-42-5 |
| EINECS No. | 202-851-5 |
| Hazard Class | 3 |
| Purity | 99.8%Min |
| Appearance | Colorless Transparent Oily Liquid |

What is Styrene Used For?
Styrene Solvent (SM) has a wide range of applications in the chemical industry, primarily as an important raw material for organic synthesis.
Plastics Industry:
In the polymer industry, styrene is a key monomer for synthesizing target polymers. The most common product is polystyrene (PS), a widely used plastic known for its high transparency, good mechanical properties, and strong chemical resistance. Polystyrene is extensively used in food packaging, electrical housings, toys, and more. Additionally, styrene is used to produce other copolymers, such as styrene-acrylonitrile (SAN) copolymer.

Rubber Industry:
Styrene solvent is also a vital raw material for synthetic rubber production. Common synthetic rubbers include styrene-butadiene rubber (SBR) and butadiene rubber (BR), which are used to manufacture tires and various rubber products. When polymerized with butadiene, styrene forms styrene-butadiene rubber (SBR), which offers excellent wear resistance, aging resistance, and elasticity, making it ideal for tires, automotive parts, and industrial rubber goods.
Styrene is also involved in the production of acrylonitrile-butadiene-styrene (NBR) rubber, which exhibits outstanding resistance to oil, solvents, and fuels, and is widely used in the automotive, aerospace, and construction machinery industries.

Unsaturated Polyester Resins (UPR)
Styrene acts as a reactive diluent in unsaturated polyester resins (UPR), which are widely used in the production of fiberglass-reinforced plastics (FRP), marine coatings, automobile parts, and various construction materials.

Is Styrene a Hazardous Substance?
Yes, styrene is classified as a hazardous substance. It is insoluble in water, but readily dissolves in ethanol, ether, methanol, acetone, and other organic solvents. Therefore, styrene solvent applications are common in the chemical and resin industries.
When exposed to air, styrene gradually undergoes polymerization and oxidation. Its vapor can form explosive mixtures with air in concentrations ranging from 1.1% to 6.01%. Improper storage or contact with flame and high temperatures may lead to fire or explosion hazards.
Where to Buy Styrene Monomer Liquid?
At Gneebio, bulk styrene is available for purchase with consistent quality and global supply. If you're looking to buy styrene for industrial use, we're here to help. We export our products all over the world-feel free to get a free quote through email 📧: info@gneebio.com
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