It was used widely in textile, printing and dyeing, porcelain enamel, pulping paper, synthetic detergent, pesticide, metallurgy, food, rubber. Caustic soda in pearls/solid we can supply too. caustic soda flake with 90% 92% 93% 94% 96% 98% 99%min caustic soda pearl with 98% 99%min caustic soda solid with 96% 99%min