... %>=90%Content of sodium carbonate<=1%<=2%Content of sodium hydroxide<=0.5%<=1%Sodium Sulfide<=0.5%<=0.1%Sodium Chloride<=1%<=6 ... chloride ,Sodium Metabisulphite, sodium hexametaphosphate, carbon black, zinc oxide, oxalic acid, pentartythritol, iron oxide, carboxyl methyl cellulose, lithopone, titanium dioxide, glacial acetic acid, formic aicd ...