Hongyunyuan brand Lithopone B301 is a kind of lithopone whose hiding power is better than that of zinc oxide and worse than that of titanium dioxide. It has good heat-resistance and is insoluble in water. It does not react with sulfureted hydrogen and bases. It will decompose and produce sulfuretd hydrogen consequently when comes across acids. Its color will change after solarization for a long time but can return to its original color in dark place. It is a kind of important material in coatings, paints, rubbers, printing inks, paper, porcelain enamel, leathers and plastics.

The major technical performances (GB T1707-95)

The sum of zinc sulfide and barium sulfide %	99
total content of zinc calculated as zinc sulfide %	28
zinc oxide %	0.6
Valatile at 105	0.3
water-soluble sulbstances %	0.4
triages 325micron %	0.1
color compared with standard sample	Precede
base value of aqueous extracts	Neutrul
oil absorption g/100g	14
achromic power compared with standard sample %	105

Packing: 25 or 50kg/bag.