... % Sodium Hydroxide (NaOH) 99% CAS NO.:1310-73-2 Used in soap-making, synthetic detergent, printing Specification:(Flakes) 99%ITEMSTANDARDNaOH, % ≥99.0Na2CO3 ... .0Na2CO3,% ≤1.0NaCL, % ≤2.8Fe2O3,% ≤0.008Applications:Mainly used for soap-making,synthetic detergent,petroleum drilling,oil-refining,paper-making,glass ...