Zinc Sulfate

Title: Zinc Sulfate
CAS Registry Number: 7733-02-0
Additional Names: White vitriol; zinc vitriol
Molecular Formula: O4SZn
Molecular Weight: 161.47
Percent Composition: O 39.63%, S 19.86%, Zn 40.51%
Line Formula: ZnSO4
Literature References: Prepn and physical properties: Gmelins, Zink (8th ed.) 32, 936-960 (1956). Effects of oral zinc sulfate in acne treatment: G. Michaelsson et al., Arch. Dermatol. 113, 31 (1977). Clinical evaluations in Wilson's Disease: T. U. Hoogenraad, C. J. A. Van den Hamer, Acta Neurol. Scand. 67, 356 (1983); T. U. Hoogenraad et al., J. Neurol. Sci. 77, 137 (1987).
Derivative Type: Monohydrate
CAS Registry Number: 7446-19-7
Additional Names: Dried zinc sulfate
Trademarks: Zincaps (RPR); Z Span (Goldshield)
Properties: Powder or granules. Loses H2O above 238°. Sol in water. Practically insol in alcohol.
Derivative Type: Heptahydrate
CAS Registry Number: 7446-20-0
Trademarks: Collazin (Vitaplex); Keratol (Streuli); Op-Thal-Zin (Alcon); Redeema (Merz); Solvazinc (Thames); Solvezink (Tika); Virudermin (Robugen); Zincate (Paddock); Zincomed (Schwarz)
Properties: Odorless crystals or granules or powder; astringent taste. Efflorescent in dry air. d 1.97. mp 100°. At 280° loses all H2O; dec above 500°. One gram dissolves in 0.6 ml water, 2.5 ml glycerol. Insol in alcohol. The aq soln is acid to litmus; pH about 4.5. Keep well closed.
Melting point: mp 100°
Density: d 1.97
NOTE: The monohydrate does not cake as the heptahydrate does, and hence is more convenient for use during the warm season and in warm climates.
CAUTION: Irritating to skin, mucous membranes: H. E. Stokinger, Patty's Industrial Hygiene and Toxicology 2A, G. D. Clayton, F. E. Clayton, Eds. (John Wiley & Sons, New York, 1981) pp 2033-2049.
Use: As mordant in calico-printing; preserving wood and skins; with hypochlorite for bleaching paper; manuf lithopone and other zinc salts; clarifying glue; electrodepositing Zn; also as reagent in analytical chemistry.
Therap-Cat: Ophthalmic astringent. Zinc supplement.
Therap-Cat-Vet: Astringent. Has been used as an emetic.
Keywords: Astringent; Replenishers/Supplements; Zinc.
Zinc Sulfide Zinc Tannate Zinc Tartrate Zinc Telluride Zinc Thiocyanate

Zinc sulfate
Zinc Sulfate.jpg
Zinc sulfate.png
CAS number 7733-02-0 YesY
7446-19-7 (monohydrate)
13986-24-8 (hexahydrate)
7446-20-0 (heptahydrate)
PubChem 24424
ChemSpider 22833 YesY
EC number 231-793-3
UN number 3077
ChEBI CHEBI:35176 YesY
RTECS number ZH5260000
ATC code A12CB01
Jmol-3D images Image 1
Molecular formula ZnSO4
Molar mass 161.47 g/mol (anhydrous)
179.47 g/mol (monohydrate)
287.53 g/mol (heptahydrate)
Appearance white powder
Odor odorless
Density 3.54 g/cm3 (anhydrous)
2.072 g/cm3 (hexahydrate)
Melting point 680 °C decomp. (anhydrous)
100 °C (heptahydrate)
70 °C, decomp (hexahydrate)
Boiling point 740 °C (anhydrous)
280 °C, decomp (heptahydrate)
Solubility in water 57.7 g/100 mL, anhydrous (20 °C)[1]
Solubility alcohols
Refractive index (nD) 1.658 (anhydrous), 1.4357 (heptahydrate)
Std molar
entropy So298
120 J·mol−1·K−1[2]
Std enthalpy of
formation ΔfHo298
−983 kJ·mol−1[2]
EU Index 030-006-00-9
EU classification Harmful (Xn)
Dangerous for the environment (N)
R-phrases R22, R41, R50/53
S-phrases (S2), S22, S26, S39, S46, S60, S61
Flash point Non-flammable
Related compounds
Other cations Cadmium sulfateManganese sulfate
Related compounds Copper(II) sulfate
 N (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Zinc sulfate is the inorganic compound with the formula ZnSO4 as well as any of three hydrates. It was historically known as "white vitriol". It is a colorless solid that is a common source of soluble zinc ions.[3]