Indexes |
Superfine |
Appearance(than the standard kind) |
Meet standards |
Purity (zinc oxide)/%≥ |
99.7 |
Metallic zinc/% ≤ |
none |
Lead oxide/% ≤ |
0.04 |
Manganese/% ≤ |
none |
Copper oxide/% ≤ |
none |
Hydrochloric acid insoluble substances/% ≤ |
0.006 |
Loss on ignition/% ≤ |
0.2 |
Screen residue(325 mesh)/% ≤ |
0.2 |
Screen residue(200 mesh)/% ≤ |
--- |
Water-soluble salt/% ≤0.1 |
0.1 |
Covering property/(g/m)≤ |
85 |
Oil Absorption/% ≤ |
14 |
Color strength/% |
95 |
Adsorption of iodine/mmol Iodine /100g |
--- |