noun[mass noun] Chemistry
A colourless liquid hydrocarbon present in coal tar and petroleum and used as a solvent and in organic synthesis.
- The raw materials for today's dyes are mainly aromatic hydrocarbons: benzene, toluene, naphthalene, anthracene, pyrene, and others.
- In combination with nitric acid, toluene gives trinitrotoluene.
- The powdered bark can also be treated with solvents, such as toluene, or amyl alcohol to extract the quinine.
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