... grade with competitive price Welcome to contact us! Name: Caustic soda flakes 99%Formular: NaOHCAS: 1310-73-2 Appearance: white flakes ... Purity: 96% & 99% Usage: Synthetical detergence,textile,paper making,printing,dyeing,soap,rubber ... to contact us!Specification is as follows,ItemsSpecificationNaOH≥ 99%Na2CO3≤ 0.8%NaCL≤ 0.05%Fe2O3≤ 0.008% Caustic Soda Flakes 99%