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How to make a water solution of zinc phosphate

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Hi,
I need to dissove a technical powder of zinc phosphate (45% zinc). I made the first dilutions in HCl acid, which seems to work fine. But as soon as I add distilled water to make a further dilution, the zinc percipitate. I need to keep the zinc in solution.
any ideas?

Adel Jacobs
laboratory analyst - South Africa


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What is the pH before and after dilution, Adel? The zinc will not stay in solution if the pH approaches neutral after dilution. Good luck.

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Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey

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