zinc sulfate

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zinc sulfate,

chemical compound ZnSO4, a very water soluble, transparent, colorless, crystalline compound. It is commonly used as the heptahydrate, ZnSO4·7H2O, and is commonly called white vitriol; it occurs naturally as the mineral goslarite, and can be prepared by reacting zinc with sulfuric acid. It is used to supply zinc in animal feeds, fertilizers, and agricultural sprays; in making lithopone; in coagulation baths for rayon; in electrolyte for zinc plating; as a mordant in dyeing; as a preservative for skins and leather; and in medicine as an astringent and emitic.
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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Zinc Sulfate

 

ZnSO4, a colorless crystalline compound, with a density of 3.74 g/cm3. Its solubility in water is 29.4 percent at O°C and 37.7 percent at 99°C. At temperatures below 38.8°C, ZnSO4·7H2O (zinc vitriol) crystallizes from solution, and between 38.8°C and 70°C, ZnSO4·6H2O. The monohydrate ZnSO4H2O forms above 70°C, which dehydrates at 238°C. Between 600°C and 900°C, zinc sulfate decomposes into ZnO and SO2. Weak solutions of zinc sulfate become turbid upon hydrolysis as a result of the precipitation of 3Zn(OH)2·ZnSO4·4H2O.

Zinc vitriol is obtained by evaporation and crystallization from solutions, usually as a by-product in the production of zinc. It is used in the production of viscoses, mineral pigments, and glazes. In metallurgy it is used as a flotation reagent. It is also used in medicine.

REFERENCES

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The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

zinc sulfate

[′ziŋk ′səl‚fāt]
(inorganic chemistry)
ZnSO4·7H2O Efflorescent, water-soluble, colorless crystals with an astringent taste; used to preserve skins and wood and as a paper bleach, analytical reagent, feed additive, and fungicide. Also known as white copperas; white vitriol; zinc vitriol.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Zinc Sulphate Market consists of the global region such as North America, Europe, Asia-Pacific and Middle East & Africa.
The data in table- 2, 3 showed that combined applications of zinc and boron in treatment [T.sub.9] (basal dose 250 gm chelated zinc+borax +foliar 3gm zinc sulphate+ 2gm boron) the maximum plant height of 29.46cm, ascorbic acid of 24.16%, fruit length of 4.95cm and fruit width of 5.61cm was observed compared to [T.sub.10] (Control) and [T.sub.5] (basal 250 gm chelated Zinc+foliar 3gm zinc sulphate) and [T.sub.6] (basal 250 gm borax+foliar 2gm boron) ...
The B and Zn in the form of boric acid (H3BO3) and zinc sulphate (ZnSO4) were applied through foliar spray according to following treatments; T1 = control (water spray), T2 = 0.3% boric acid at fruit set stage, T3 = 0.5% zinc sulphate at fruit set stage, T4 = 0.3% boric acid + 0.5% zinc sulphate at fruit set stage, T5 = 0.5% zinc sulphate + 0.3 % boric acid at premature stage.
"If farmers find any Chinese-imported zinc sulphate, I would ask them to call Trading Standards on (0191) 383 3589."
Summary: Zinc sulphate is an inorganic compound that appears as white rhombic crystals/powder at the room temperature.
In all eight animals, the lesions were treated after removal of necrotic tissue with the application of Copper sulphate and Zinc sulphate (1:1) and a light bandage was applied in such a way that weight bearing was not disturbed on the affected digit.
The fertilizers combination per plant at citrus orchards should be 60 kilogram of animal waste fertilizers, 750 gram Phosphorous, 500 gram Potash, and 50 gram Zinc Sulphate.
Among fertilizers, zinc sulphate has an important role in regulating the holes and ionic balance in plant system in order to decrease the water stress such that any secondary factor which leads to inaccessibility of this element for the plant, indicates the yield and concentration of this element in various tissues such as grain [16].
Chakradhar Chemicals is engaged in the manufacture of zinc sulphate heptahydrate and zinc sulphate monohydrate.
11 August 2009 - Trading Standards Officers in Durham County, North East England, have been warned that there may be a zinc sulphate product available in the market that contains high levels of cadmium.
Experts suggested per acre spray of 200-gram Potassium Nitrate, 250-gram Zinc Sulphate, and 300-gram Boric Acid in 100 litres of water.