Direct sales of zinc sulfate seven water manufacturers

Colorless or white crystal, particle or powder, alias haoalum
Odorless
It tastes astringent
Weathered in dry air, all crystal water is lost at 280 ℃ and decomposed above 500 ℃
1g is soluble in 0
6ml water, 2
5ml glycerol and insoluble in ethanol
The aqueous solution is acidic to litmus, and the pH is about 4
5
Those containing 1 molecule of crystal water are less likely to agglomerate
The relative density is 1
97
Melting point: 100 ℃
The minimum lethal dose (rat, oral) is 2200mg / kg
Irritating
It is used in the manufacture of lithopone and as mordant, astringent, wood preservative, etc
Appearance and properties: colorless orthorhombic crystal, particle or powder, odorless and astringent
Melting point (℃): 100, relative density (water = 1): 1
957, boiling point (℃): & gt; 500 (decomposition), molecular formula: ZnSO4 & middot; 7H2O, solubility: soluble in water
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