Package: 25kg per bag

Uses : used in leather and tannage, plant bleaching agent, reductant

Molecular Structure:

Product description: Item Value Top-grade First grade Qualified product sodium sulfite (Na2SO3),% ≥ 97.0 ≥ 96.0 ≥ 93.0 Fe,% ≤ 0.003 ≤ 0.005 ≤ 0.02 water-Insoluble ,% water-Insoluble ,% ≤ 0.02 ≤ 0.03 ≤ 0.05 Free alkali(as Na2SO3),% ≤ 0.10 ≤ 0.40 ≤ 0.80 Sulfate(as Na2SO4),% ≤ 2.5 — — Chloride(as NaCl),% ≤ 0.10 — —