Sodium hydrosulfite :85%,88%,90% Chemical name: hyposulphurous acid natrium Molecular formula: Na2S2O4 Appearance: white free-flow crystal powders Smell: flavourless or smell of sulfur dioxide Packing: in 50kgs net iron drums with double-layer inner plastic bags. Main Application:used as reductant in printing and dyeing industry; also used in
medicine,mineral processing,,thiourea and sulfide synthesis Specification: Industrial:HG/T 2074-1991 JIS K 1476-1995 Food grade :GB 2682-1995