| Section2 = | Section3 = | Section7 = | Section8 = }} Styrene, also known as vinyl benzene as well as many other names (see table),'s an organic compound with the chemical formula C6H5CH=CH2. This aromatic hydrocarbon's a colorless oily liquid that evaporates easily and has a sweet smell, although high concentrations confer a less pleasant odor. Styrene's the precursor to polystyrene and several copolymers. Approximately 15 billion kg are produced annually. Occurrence, history, and use Styrene… (More on Styrene)