Refining of saltwater
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To produce reagent-grade sodium chloride, is the process for controlling impurities mainly the purification step of table salt water? What points should be noted?
The refining process is one of removing impurities, and the method used for producing reagent-grade salt is essentially similar to that used for industrial-grade salt; the only difference is that more filtering steps or additional sets of equipment are employed
How can sulfate ions in a solution be effectively removed? The precipitate formed by adding barium chloride is fine and difficult to filter out.