... granular or crystalline powder Uses:Leather, chrome tanning.Refind Sodium Formate 90%,92%,94%,95%,97% Properties:White granular or crystalline powder ... .02.51.50.5Sodium chloride ,% ≤3.02.52.50.5Sulfured sodium ,% ≤0.020.020.020.01Water ,% ≤1.51.51.00.82 ... ExcellenceFirst ClassHCOONa≥99≥98Na2CO3≤0.3≤0.8*NaOH≤0.2≤0.45NaCl≤0.01≤0.01*H2O≤0.4≤0.8*Na2S≤0.005≤0.005Fe3+≤20PPm≤30PPm*PH9 ...