Zinc sulfate
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This article is about the chemical compound. For the use of zinc sulfate as a medication, see Zinc sulfate (medical use).
Zinc sulfate describes a family of inorganic compounds with the formula ZnSO4(H2O)x. All are colorless solids. The most common form includes water of crystallization as the heptahydrate,[4] with the formula ZnSO4·7H2O. As early as the 16th century it was prepared on the large scale, and was historically known as "white vitriol"[5] (the name was used, for example, in 1620s by the collective writing under the pseudonym of Basil Valentine). Zinc sulfate and its hydrates are colourless solids.
Quick Facts Names, Identifiers ...
Names | |
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IUPAC name
Zinc sulfate | |
Other names
White vitriol Goslarite | |
Identifiers | |
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3D model (JSmol) |
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ChEBI | |
ChEMBL | |
ChemSpider |
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DrugBank | |
ECHA InfoCard | 100.028.904 |
EC Number |
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PubChem CID |
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RTECS number |
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UNII |
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UN number | 3077 |
CompTox Dashboard (EPA) |
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Properties | |
ZnSO4 | |
Molar mass | 161.44[1] 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 (1,256 °F; 953 K) decomposes (anhydrous) 100 °C (heptahydrate) 70 °C, decomposes (hexahydrate) |
Boiling point | 740 °C (1,360 °F; 1,010 K) (anhydrous) 280 °C, decomposes (heptahydrate) |
57.7 g/100 mL, anhydrous (20 °C) (In aqueous solutions with a pH < 5)[2] | |
Solubility | alcohols |
−45.0·10−6 cm3/mol | |
Refractive index (nD) |
1.658 (anhydrous), 1.4357 (heptahydrate) |
Thermochemistry | |
Std molar entropy (S⦵298) |
120 J·mol−1·K−1[3] |
Std enthalpy of formation (ΔfH⦵298) |
−983 kJ·mol−1[3] |
Hazards | |
GHS labelling: | |
Danger | |
H302, H318, H410 | |
P264, P270, P273, P280, P301+P312, P305+P351+P338, P310, P330, P391, P501 | |
NFPA 704 (fire diamond) | |
Flash point | Non-flammable |
Safety data sheet (SDS) | ICSC 1698 |
Related compounds | |
Other cations |
Cadmium sulfate Manganese sulfate |
Related compounds |
Copper(II) sulfate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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