murexide

American  

[myoo-rek-sahyd, -sid] / myʊˈrɛk saɪd, -sɪd /

noun

Chemistry.

1. a reddish-purple, crystalline, sparingly water-soluble solid, C 8 H 8 N 6 O 6 , having a green luster, formerly used as a dye.

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Etymology

Origin of murexide

First recorded in 1830–40; murex + -ide ( def. )

Example Sentences

The first group comprises madder, cochineal, orchil, alkanet, and murexide.

From Scientific American Supplement, No. 363, December 16, 1882 by Various

The pigment, no matter what its hue, dissolves with effervescence and afterwards yields murexide.

From The Glow-Worm and Other Beetles by Teixeira de Mattos, Alexander

All of these, however, being more or less soluble in water, and owing their colours to murexide, would be ill adapted for pigments.

From Field's Chromatography or Treatise on Colours and Pigments as Used by Artists by Salter, Thomas

When an alkaline solution of murexide is precipitated by an acid, a light shining powder results, called purpuric acid.

From Field's Chromatography or Treatise on Colours and Pigments as Used by Artists by Salter, Thomas

Treated with nitric acid, the adipose tissue of the Decticus produces an effervescence similar to that of chalk and yields enough murexide to redden a tumblerful of water.

From The Glow-Worm and Other Beetles by Teixeira de Mattos, Alexander