Definitions
from The Century Dictionary.
- noun The purpurate of ammonia of Prout (probably C8H8N6O6).
from the GNU version of the Collaborative International Dictionary of English.
- noun (Chem.) A crystalline nitrogenous substance (C8H8N6O6, 5-5'-nitrilodibarbituric acid monoammonium salt) having a splendid dichroism, being green by reflected light and garnet-red by transmitted light. It was formerly used in dyeing calico, and was obtained in a large quantities from guano. It is now synthesized from alloxan. Formerly called also
ammonium purpurate .
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun organic chemistry
Ammonium purpurate , the ammoniumsalt ofpurpuric acid , used as acomplexometric indicator and acolorimetric reagent .
Etymologies
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Examples
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The first murexide sent into the market was a reddish-purple powder, dissolving in water with a fine purple tint, leaving a little residue undissolved.
Field's Chromatography or Treatise on Colours and Pigments as Used by Artists George Field
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When sulphuretted hydrogen is passed through a concentrated solution of murexide, it is immediately decoloured; a fact which renders it likely that murexide pigments would be as liable to suffer from an impure atmosphere, as from exposure to light and air.
Field's Chromatography or Treatise on Colours and Pigments as Used by Artists George Field
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We are not aware that murexide has yet been brought forward as a pigment, and judging from its character as a dye, it would scarcely enrich the palette.
Field's Chromatography or Treatise on Colours and Pigments as Used by Artists George Field
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A little ammonia is then added, when the fine _purple_ murexide stain will be produced.
Scientific American Supplement, No. 611, September 17, 1887 Various
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The third group includes safflower, magenta, and murexide (light shades).
Scientific American Supplement, No. 363, December 16, 1882 Various
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When an alkaline solution of murexide is precipitated by an acid, a light shining powder results, called purpuric acid.
Field's Chromatography or Treatise on Colours and Pigments as Used by Artists George Field
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All of these, however, being more or less soluble in water, and owing their colours to murexide, would be ill adapted for pigments.
Field's Chromatography or Treatise on Colours and Pigments as Used by Artists George Field
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A special character of this dye (murexide) is the presence of mercury, the salts of which serve as mordants for fixing it, and may be detected by the ordinary reagents.
Scientific American Supplement, No. 363, December 16, 1882 Various
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It is not there: I find not the least trace of murexide.
The Glow-Worm and Other Beetles Jean-Henri Fabre 1869
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The problem is solved: the colouring-matter which has just formed is murexide; and consequently the powdery substance which filled the cells was none other than uric acid, or more precisely ammonium urate.
The Glow-Worm and Other Beetles Jean-Henri Fabre 1869
chained_bear commented on the word murexide
Usage note in comment on nitrosophenyline.
October 4, 2017
ruzuzu commented on the word murexide
For more, see alloxan.
November 30, 2018