Definitions
from The Century Dictionary.
- noun In chem., a salt of sulphurous acid, in which one half of the hydrogen of the acid is replaced by a metal.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Chem.) A salt of sulphurous acid in which the base replaces but half the hydrogen of the acid; an acid sulphite.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun inorganic chemistry, UK Alternative spelling of
bisulfite .
Etymologies
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Examples
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Small quantities of additives are usually employed in the process, eg sodium sulphite and bisulphite to give 150-200 ppm in the product to retard oxidative changes during processing and non-enzymic browning during storage; antioxidants and emulsifying agents may be added to minimise oxidative changes during storage and to improve the texture of the reconstituted product respectively.
Chapter 25 1987
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After washing, the slices are left soaking in water overnight, then washed again and finally immersed for 3 hours in 0.25 per cent bisulphite solution.
Chapter 32 1987
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- Use sodium bisulphite - 81 Ibs or powder per ton.
Chapter 3 1976
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This was a development of the mysterious attraction which weak light appearing in darkness had had for him since his boyhood, when he had, with his school fellows, warmed fluorine crystals to make them luminescent; and now he took up, with the astronomer W. Wolf, the study of the luminosity of pyrogallic acid when it is mixed with alkali and bisulphite for developing photographs.
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The bisulphite of lime (see formula No. 11, ante) would also, no doubt, be excellent as a preservative for fishes if not quite so much diluted.
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Messrs. Medlock and Bailey's bisulphite of lime (calcium) is most highly recommended by analytical experts for preserving large joints of meat and fish; and, indeed, the experiments conducted under scientific and Government supervision have abundantly proved its value.
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This solution with excess of sulphur dioxide yields the "bisulphite of lime" of commerce, which is used in the "chemical" manufacture of wood-pulp for paper making.
Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary" Various
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If, now, the quebracho extract be treated with sulphite and bisulphite in the usual way, the phlobaphenes are solubilised, but the reducing effect of the bisulphite tends to brighten the colour of the otherwise dark coloured phlobaphenes as well as that of the soluble tannins, and a reddish-yellow coloured extract results, imparting its own colour to the pelt.
Synthetic Tannins Georg Grasser
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On subsequent distillation crude acetone passes over, and may be purified by conversion into the bisulphite compound.
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The crystalline cake of acetone sodium bisulphite, which separates on standing, is well pressed, to free it from impurities, decomposed by distillation with dilute sodium carbonate, and the aqueous distillate of pure acetone dehydrated over calcium chloride.
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