caustic soda flakes: NaOH 99% min Na2CO3 0.9%max NaCl 0.15% ... 99% 2) Popular name: caustic soda 5) Applications:a) Widely used in papermaking, synthetic detergent, soap, adhesive fiber, artificial silk and ... , metallurgical, pharmaceutical industry, urban construction and so on. Caustic Soda Flakes(SGS or CIQ report)