... 92%-99%min1)Refined Sodium Formate 90%,92%,94%,95%,97% Properties:White granular or crystalline powder Uses:Leather, chrome ... tanning.Refind Sodium Formate 90%,92%,94%,95%,97% Properties:White granular or crystalline powder Uses:Leather, chrome ... of sodium hydrosulfite, oxalic acid and formic acid .ItemsIndexContent ,% ≥90929597Sodium hydroxide ,% ≤1.51.51.00.5Sodium carbonate ,% ≤3.02.51 ...