... , optical glass 2.Basic chemical raw material, widely used in medicine, papermaking, metall Sodium Carbonate LA-K63 Soda ash is ... , it is used to remove sulfur and phosphorus, used in mineral processing and metals such as copper, lead, nickel, ... rinse, bath salts and pharmaceutical alkaline agent in the tanning4.As analytical reagent, also used in the pharmaceutical industry and photoengraving.Packing & ...