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How can I dissolve zinc oxide in phosphoric acid? [Iran] 

April 25, 2008

Hello

I want to make zinc phosphate (coarse grain). but I have a problem with dissolving of ZnO in phosphoric acid. How can I solve it ? Which formula do you introduce me to?

best.

Mansour Kashiha
coating shop - Tehran, Iran

If you want make zinc phaspate solution for phosphating you can use zinc phosphate not zinc oxide and the chemical contant as following
amonium flouride 10 g /l
zinc phosphate 17 9/l
phosphoric acid 300 g /l
nickel nitrate 20 g /l
amonia 8 9/l
with best regards,

Ali Gomaa
- Cairo, Egypt