Chemical structure
Both benzene and styrene are organic compounds composed of benzene rings. The benzene ring is a six-membered ring composed of six carbon atoms and six hydrogen atoms. Styrene is formed by a vinyl group (C2H3) substituted on the benzene ring, while benzene is only substituted by hydrogen atoms (H). Therefore, the molecular formulas of benzene and styrene are C6H6 and C8H8, respectively.
Physical properties
Both benzene and styrene are colorless and transparent liquids, but their densities and boiling points are different. The density of benzene is 0.8765 g/cm3 and the boiling point is 80.1℃, while the density of styrene is 0.906 g/cm3 and the boiling point is 145℃. In addition, styrene is more volatile than benzene and has a stronger smell.
Chemical properties
Benzene and styrene also differ in chemical properties. Benzene is more stable than styrene and is insensitive to oxidants and acids and bases. But it is prone to addition reactions, such as reacting with hydrogen to form cyclohexane, or substitution reactions with halogens. In contrast, styrene is more likely to undergo conjugate addition reactions, such as reacting with bromine to form 1,2-dibromoethylene. In addition, styrene can also form polystyrene through polymerization.
Uses
Benzene and styrene are widely used in industrial production and daily life. Benzene is an important organic chemical raw material that can be used to make plastics, rubber, fiber, dyes, medicines, etc. Styrene is also an important chemical that is widely used in plastics, rubber, coatings, adhesives and other fields.
In summary, although benzene and styrene are both organic compounds composed of benzene rings, their structures, physical and chemical properties are different.
C6h6 CAS No 71-43-2 Benzol Liquid Pure Benzene
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