... commercial dyes. JReductive bleaching of minerals (primarily Calcium Carbonate). JReplacing sodium hydrosulfite in all above applications. At the same time, we ... , Furfural 98.5%Min, Sodium Percarbonate, Melamine 99.8%Min, Titanium Dioxide 2-Ethyl Anthraquinone, Sulfamic acid, Oxalic acid, Indigo, TCCA,etc.If ...