Caustic Soda Flakes 99% Sodium Hydroxide (NaOH) 99% CAS NO.:1310-73-2 Used in soap-making, synthetic detergent, printing Specification:(Flakes) 99 ... for soap-making,synthetic detergent,petroleum drilling,oil-refining,paper-making,glass-making, textile industry,printing,metallurgy,artificial fiber,water treatment etc. Sodium ...