... less impurity 4.decolor the sugar Coal-based Powder Activated CarbonAppearance: black powder, odorless, tasteless, not dissolved in general, ... fruit shell as raw materials, zinc chloride, phosphoric acid as activating agent, made through carbonization, activation and ... as the pigment removal, purification and refining of citric acid, cystine, oil, chemical products.Specification : Indicator species ...