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Ammonium sulphate

a white soluble crystalline solid used mainly as a fertilizer and in water purification. Formula: (NH4)2SO4
Historical Examples

Add a few drops of sodium nitroprusside solution, make alkaline with ammonia, then saturate with ammonium sulphate crystals.
The Elements of Bacteriological Technique John William Henry Eyre

The reduction may be accelerated by the addition of some ammonium sulphate.
Scientific American Supplement No. 299 Various

This is filtered off, washed with a saturated solution of ammonium sulphate and then dissolved in 0.2 per cent.
On Digestive Proteolysis R. H. Chittenden

From this solution (after partial evaporation) alum crystals are obtained by the addition of potassium or ammonium sulphate.
The Natural History of Clay Alfred B. Searle

Aldehyde gives a carmine red unaltered by ammonium sulphate.
The Elements of Bacteriological Technique John William Henry Eyre

Under this process ammonium nitrate is produced by the double decomposition of ammonium sulphate and sodium nitrate.
America’s Munitions 1917-1918 Benedict Crowell

This plate absorbs more than 200 times its volume of hydrogen when electrolyzed in a solution of ammonium sulphate.
Scientific American Supplement, No. 312, December 24, 1881 Various

(25 to 37 cents) per unit of combined nitrogen cheaper than ammonium sulphate, and 3s.
Every-day Science: Volume VI. The Conquest of Nature Henry Smith Williams


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