a water-insoluble, pleasant-smelling, colorless powder or white scales, C 12 H 10 , composed of two phenyl groups, from which benzidine dyes are derived: used chiefly as a heat-transfer agent and in organic synthesis.
a white or colourless crystalline solid used as a heat-transfer agent, as a fungicide, as an antifungal food preservative (E230) on the skins of citrus fruit, and in the manufacture of dyes, etc. Formula: C6H5C6H5
any substituted derivative of biphenyl


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