Zinc oxide for phosphating solution

Test items

skills requirement

results of testing

Zinc oxide (as dry)%

≥99.7

99.72

Metal (in terms of Zn)%

no

no

Lead oxide (in terms of Pb)%

≤0.015

0.0001

Copper oxide (calculated as Cu)%

≤0.0002

0.0001

Hydrochloric acid insoluble matter %

≤0.006

0.002

Burning reduction %

≤0.2

0.16

Water soluble %

≤ 0.10

0.08

105 ° C volatiles %

≤0.3

0.17

Sieve residue (45um)%

0.006

0.006

Iron (Fe) content %

0.002

0.002