Sodium Metabisulphite(Tech Grade) Na2S2O5: 96% min SO2: 65% min Packing:in 25/50/1000kg PP/PE bags Sodium Metabisulphite (Technical Grade)Apperance: ... White or slight yellow crystalline powder.It gives steady Sodium Bisulfite when soluble ... EGYPT,INDONESIA,MALAYSIA,UKRAINE,VIETNAM,AUSTRLIA,NEWZELAND etc. Sodium Metabisulphite(Technical Grade)