1.Molecular formula: na2s2o4
2.Appearance: white free-flow crystal powders
3.Standard:hg2074-2004, jisk1476-1995, hg/t2682-1995
4.Index 90% 88% 85% food additive
5.Packing£º15kg, 25kg , 50kg or 100kg net in iron drums with double inner polybags.
6.Usage: 1. Widely used in textile industry for vat dyeing, reduction cleaning, printing and stripping, textile textile bleaching .
2. It is also used in bleaching paper pulps , especially mechanical pulps, it¡¯s the most fittable bleaching agent in pulps.
3. It is used in bleaching kaolin clay, fur bleaching and reductive whitening, bleaching of bamboo products and straw products,
4. It is used in mineral, the compound of thiourea and other sulphides.
5. It is used as reducing agent in chemical industry.
7. Specification:

8. H. S. Code: 28311000
9. Cas no.: 7775-14-6