Sodium hydroxide, flakes,pearl ,solid, 99%min 96%mincompetitive price, good quality,professional service ... .CODE: 2815.11.00UN NO.1823CAUSTIC SODA FLAKES 99% NaOH 99.1%Na2CO30.56%NaCl0.07%Fe2O30.005% CAUSTIC ... SODA SOLID 99%NaOH 99.1%Na2CO30.8%NaCl0.07%Fe2O30.005% CAUSTIC ... SODA PEARLS 99%NaOH 99.1%Na2CO30.6%NaCl0.07%Fe2O30.005%Caustic ...