Zinc sulfate.heptahydrate ZnSO

Tungsten(VI) fluoride (g) WF, -53 Zinc sulfate heptahydrate ZnSO,.7H,0 -138... 

The solubihty of zinc sulfate increases almost linearly with temperature from 27.6 wt % (as ZnSO at —7° C to 41.4 wt % at 39°C. In this range, the heptahydrate is the soHd phase. As the temperature rises, the soHd phase becomes the hexahydrate and its solubihty increases to a maximum of 47.7 wt % at 70°C. Above this temperature, the soHd phase is the monohydrate and solubihty declines with temperature to 44.0 wt % at the boiling point (105°C). 

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