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triphenylmethane

[ trahy-fen-l-meth-eyn, -feen- ]

noun

, Chemistry.
  1. a colorless, crystalline, solid compound containing three benzene rings, C 19 H 16 , from which many dyes are derived.


triphenylmethane

/ traɪˌfiːnaɪlˈmiːθeɪn; -ˌfɛn- /

noun

  1. a colourless crystalline solid used for the preparation of many dyes. Formula: (C 6 H 5 ) 3 CH
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Word History and Origins

Origin of triphenylmethane1

First recorded in 1880–85; tri- + phenyl + methane
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Example Sentences

Crystal violet, a triphenylmethane dye, is used to dye ink and textiles.

Trimethylaniline, triphenylmethane and mononitrophenol are a few examples which happen to occur to the memory, and they are by no means the longest or queerest-sounding.

E. and O. Fischer showed that these compounds were derivatives of triphenylmethane and tolyldiphenylmethane respectively.

The reverse series of operations was also carried out by the Fischers, triphenylmethane being nitrated, and the nitro compound then reduced to triaminotriphenylmethane or paraleucaniline, which on careful oxidation is converted into the dye-stuff.

It is evident, from what has been said, that rosolic acid and its related colouring-matters are members of the triphenylmethane group.

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triphasictriphenylmethane dye