The food industry as a bleaching agent, a preservative, a leavening agent, an antioxidant, a color fixative and preservative agent.
Quality Standard(GB1886.7-2015) Items Standard Assay(as Na2S2O5)% ≥ 96.5 Fe% ≤ 0.003 Clarity clear As (mg/kg) ≤ 1.0 Heavy metal(Pb) (mg/kg) ≤ 5.0