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lithopone 28-30%,B301Item Standard Total amount of Zn(calculated as ZnS and BaSO4) 99%min Total amount of Zn(calculated as ZnS) 28-30%min ZnO 0.60max Volatiles matter(at 105°C) 0.30%max Water soluble matter 0.5%max Residues on 63μm 0.1%max Color(compared with standard sample) similar Alkalinity of the aqueous extract netural Oil absorption g/100g 14max Color killing 100min Hiding power not lower than 5%of standard sample Nature of the products: This product is white powder, insoluble in water, and does not react with hydrogen sulfide and the lye . R esulting from decomposition of hydrogen sulfide gas when they encounter acid solution. Usage of the products: Prouducts are mainly used in conatings, production of white paint and modulation of various light-colored paint,is also used in rubber,pringting ink,varnished cloth,paper,enamel, tanning ,education and so on.Among them, the lithopone B-301 is belong to the more high-grade type of lithopone pigment mainly used for the production of relatively high-grade paint, coating Our corporation is the biggest production of lithopone base in North China, it is the provincial advanced enterprises. Ministry of Chemical Industry sentinel lithopone manufacturers Products sold throughout the country,and with the qualification of autonomous export.