Lithopone
Molecular formula: Zns.BaSO4
Description of products: Lithopone is one of the important white pigments, consisting of zinc sulfide and barium sulfate. It is white powder. As it possesses the properties of good tinting strength, hiding power and resistance to weathering. B301,311 are basic grades, B302 is a product with surface treatment, more suitable for paints.
Function:Lithopone is extensively used in paints, coatings, inks, rubber, coated fabrice, paper, enamel, artificial leather, plastlics, etc.
Specification:
| Index Name |
B301 |
B302 |
B311 |
Sum of totlal zinc (calculated as zinc sulfide) and banium sulfate % min |
99 |
99 |
99 |
Total zinc(calculated as zinc sulfide) % min |
28 |
28 |
30 |
Zinc oxide % max |
0.6 |
0.3 |
0.3 |
Matter volatile at 105 % max |
0.3 |
0.3 |
0.3 |
Matter soluble in water % max |
0.4 |
0.4 |
0.3 |
Residue on sieve(63μm)% max |
0.1 |
0.1 |
0.1 |
Color(to the standard sample) |
Similar |
Similar |
Similar |
Alkalinityof the agueous extract |
Neutral |
Neutral |
Neutral |
Oil absorption walue g/100g max |
14 |
11 |
10 |
Lightening power |
Not lower than standard sample |
Packaging: Net weight 25kgs, 50kgs per each plastic woven bag.
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