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Lithophone is a white pigment consisting of a mixture of barium sulfate and zinc sulfide. It is used in interior paints and in some enamels. It is widely used for white paint.
Characteristics
It is a valuable pigment that is brilliant white with fine texture which is advantageous vs white lead. It mixed well with oils such as linseed oil or varnish, turns grey very fast in sunlight and white again in the dark.
Idex | Index | ||
Super grade | Grade 1 | Qualified Grade | |
Total of Zinc and BaS04 (asZnS) (m/m) ≥ | 99 | ||
Total Zinc (asZnS) %(m/m) ≥ | 28 | ||
Zinc oxide %(m/m) ≤ | 0.6 | 0.8 | 1 |
Volatile matters at 105°C %(m/m) ≤ | 0.3 | 0.3 | 0.5 |
Soluble matters in water %(m/m) ≤ | 0.4 | 0.5 | 0.5 |
screen residues (63µm mesh) %(m/m) ≤ | 0.1 | 0.1 | 0.1 |
Color(Compare with standard spcimen) | Superior | Similar | Little low |
Alkalinity of water extracting | Neutral | ||
Oil absorpting g/100g ≤ | 14 | ||
Color Killing (Compare with standard specimen) % ≥ | 105 | 100 | 95 |
Hiding power(ratio) | No below to 5%of standard sample(Absolut difference) | ||
paint use lithophone