... , refining tungsten, rayon and soap manufacturing. In addition, in the production of dyes, plastics, pharmaceutical and organic intermediates, old ... permanganate, phosphate, etc., but also the use of many of caustic soda.Packing:It is packed with polyethylene bag as liner ... should be stored in a dry, ventilative and clean warehouse; kept away from moisture and hot. Caustic soda flakes in chemicals