Lithopone
Test Means: GB/T1707-86
2 types:
Standard (B301):
first-class product: Ba+SO4 (as ZnS)%(m/m) ≥99, Zinc Oxide %(m/m) ≤0.6
Second-class product: Ba+SO4 (as ZnS)%(m/m) ≥---, Zinc Oxide %(m/m)≤0.7
Standard (B302):
first-class product: Ba+SO4 (as ZnS)%(m/m) ≥99, Zinc Oxide %(m/m) ≤0.3
Second-class product: Ba+SO4 (as ZnS)%(m/m) ≥---, Zinc Oxide %(m/m) ≤0.4
Character: A white pigment, Relative density: 4.136-4.39, Insoluble in water, with sulfuric acid and alkaline solution of hydrogen does not work. Easy case of acid decomposition of hydrogen sulfide gas, easily oxidized in air, Metamorphism after being damp, highly cover rate