Three ways of judging the zinc powder quality

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How to judge the quality of zinc powder which is supplied by many metal powder manufacturers? Below we summarize a few ways of judging the quality of zinc powder:

Zinc metal powders which have poor quality are as follows:

a. Zinc powder is coarse and has obvious granular sensation.

b. Zinc powder is varicolored.

c. Take out 1g zinc powder and dissolve it in 10ml hydrochloric acid: insoluble substances will generate in the solution and ash content occupies a big proportion; besides, the solution will become yellow after the zinc powder is dissolved. The above phenomenon all shows that the impurity content is very high in the solution.

zinc metal powder

On the contrary, zinc powder which has good quality is as follows:

a. Zinc powder is fine, which is like the flour and very fine and smooth when touch with finger.

b. No impurities are existed in the zinc powder.

c. Take out 1g zinc powder and dissolve it in 10ml hydrochloric acid: no insoluble substances, little or no ash content and clear transparent solution after complete dissolution of zinc powder, which all show that the impurity content is little in the solution.

The above judgment methods are for the references of electroplating administrators.