Place of Origin : Luoyang,China

CAS: 97-00-7

Standard of identity: HG/T2553-2003
Characteristic Specification
Refined Super Grade First Grade
Appearance Light Yellow to Pale Brown Crystals
Crystallizing Point ，℃ ≥ 49.5 48.5 47.5
Purity, % ≥ 99.5 99.0 96.0


Packing：In iron drums of 300 kgs net each.
Moisture, % ≤ 6.0
Insoluble matter in Sodium Sulfide, % ≤ 0.5