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auxochrome

[ awk-suh-krohm ]

noun

, Chemistry.
  1. any radical or group of atoms that intensifies the color of a substance.


auxochrome

/ ˈɔːksəˌkrəʊm /

noun

  1. a group of atoms that can be attached to a chromogen to convert it into a dye


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Other Words From

  • auxo·chromic adjective

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Word History and Origins

Origin of auxochrome1

First recorded in 1890–95; auxo- + chrome

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Example Sentences

The selenium atom in a cyclic compound also acts like an auxochrome.

This brings selenophene more akin to pyrrole than thiophene, but the group -NH- in the molecule of pyrrole is an auxochrome.

In other words, an auxochrome in addition to the chromophore group transforms a colorless chromogen into a colored one.

While phenyldisulphide is colorless, when an auxochrome group is added, such as NH2, the compound is colored.

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