Simple and immediate tests to check the quality of zinc stearate:
In this test, which is a comparative test, the FSZ5012 zinc stearate sample produced by Fanavaran Shimi Company has been compared with the zinc stearate produced by another company (which is referred to as the second sample in this article).
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3- Checking the appearance after cooling:
The second sample has a yellow and earthy color after cooling, which can indicate the presence of impurities in it, the zinc stearate sample of FSZ5012 is completely white.
4- Burning test:
Set the oven temperature to 220 degrees, after the oven reaches this temperature, put the samples in the oven for 20 minutes. Then see the results.
While the stearate sample on FSZ5012 shows slight changes in color, the second sample is completely dark and a large part of it is burnt.
It should be noted that it is mandatory to continue taking supplementary tests.
Full article at: https://goo.gl/TytqhZ
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