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.

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.

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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.
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The length, width and depth of sole ulcers were recorded every 5th day while doing dressing with Copper sulphate and Zinc sulphate.
This phenomenon may be related to the beneficial effect of zinc sulphate at a rate of 50 ppm Zn with applied organic matter application in the form compost at a rate of 5 ton [fed.
5% zinc sulphate at fruit set stage (T4) exhibited 3-fold higher number of aborted seeds in contrast to control (Table 3).
If farmers find any Chinese-imported zinc sulphate, I would ask them to call Trading Standards on (0191) 383 3589.
The positive effect of consuming micro-nutritional fertilizers like zinc sulphate on yield, whether in soil or spraying on leaves has been reported by many scientists [17,16].
The ratings are constrained by the fragmented nature of the domestic zinc sulphate industry, the vulnerability of profitability to agro-climatic conditions and fluctuations in raw material prices, the high financial risk profile characterised by high gearing and small net worth, besides high working capital intensity.
If farmers find any Chinese imported zinc sulphate I would ask them to call Trading Standards", also said Waller.
In case Zinc was not applied at nursery stage then growers should apply five kilogram per acre Zinc Sulphate containing 35 per cent active Zinc ingredient or 10 kilogram Zinc Sulphate per acre if it contains 20 per cent Zinc as active ingredient.
He said use of 5 kg zinc sulphate per acre within 10 days after transplantation of paddy nursery was essential to get a good produce.
Due to the global economic importance of the oilseed rape and the limited knowledge available regarding the effects of mixed effects of biofertilizer and different levels of N and zinc sulphate on fertilizer yield and nitrogen use efficincy, this research was performed to find out the optimal combination of nitrogen rate, biofertilizer and zinc sulphate fertilizer in a field study.