Zinc sulfate

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Zinc sulfate
IUPAC name	zinc sulfate
Other names	White Vitriol, Goslarite
Identifiers
CAS number	7733-02-0
PubChem	24424
SMILES	[O-]S(=O)(=O)[O-].[Zn+2]
Properties
Molecular formula	ZnSO4 (anhydrous) ZnSO4.7H2O (heptahydrate)
Molar mass	161.472 (anhydrous) [1] 287.579 (heptahydrate) [1]
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox references

Zinc sulfate (ZnSO₄) is a colorless crystalline, water-soluble chemical compound. The hydrated form, ZnSO₄·7H₂O, the mineral goslarite, was historically known as "white vitriol" and can be prepared by reacting zinc with aqueous sulfuric acid. It may also be prepared by adding solid zinc to a Copper II Sulfate solution. (Zn+CuSO₄→ZnSO₄+Cu). It is used to supply zinc in animal feeds, fertilizers, and agricultural sprays. ZnSO₄·7H₂O is used in making lithopone, in coagulation baths for rayon, in electrolytes for zinc plating, as a mordant in dyeing, as a preservative for skins and leather and in medicine as an astringent and emetic. ^{[2] [3] [4]}

Other natural form of this heptahydrate is known as mineral zincmelanterite (Zn,Cu,Fe)SO₄·7H₂O (structurally different from goslarite). Lower hydrates of zinc sulfate are rarely found in nature as minerals: bianchite (Zn,Fe)SO₄·6H₂O, boyleite (Zn,Mg)SO₄·4H₂O and gunningite (Zn,Mn)SO₄·H₂O.

An aqueous solution of zinc sulfate is claimed to be effective at removing moss from roofs. Spraying a mixture on moss will allow the wind to simply blow off the remaining debris, however it is not recommended for use on lawns as it is as effective at removing grass. ^[5]

Zinc sulfate also has reported uses of deceiving medical drug examinations.^[6]

References

1. ^ ^{a b} Based on the corrected standard atomic weight of Zn (65.409 g/mol)
2. ^ "ICSC (International Chemical Safety Cards) 1698 ZINC SULFATE". Centers for Disease Control.
3. ^ "Burns, Gilbert's, Parasites, Stomatitis, Trichomoniasis, ...". National Institutes of Health.
4. ^ "CAMEO Chemical data sheet for ZINC SULFATE". National Oceanic and Atmospheric Administration.
5. ^ From [1] "If zinc sulfate comes into contact with neighboring plants, damage may occur. Plants and shrubbery should be draped when this chemical is being used."
6. ^ From [2] "The idea is that zinc attaches to drug molecules through a process known as chelation, screening them from urine and diverting them to feces." Although the reliability of this source and its scientific content is not certain.

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