Caustic Soda Flakes 99% Sodium Hydroxide (NaOH) 99% CAS NO.:1310-73-2 Used in soap-making, synthetic detergent, printing Specification:(Flakes) 99%ITEMSTANDARDNaOH, % ≥99.0Na2CO3 ... , textile industry,printing,metallurgy,artificial fiber,water treatment etc. Sodium Hydroxide Flakes 99%