Sodium Sulfite Anhydrous

Name：Sodium Sulfite   Chemical formula：Na2SO3   Physical appearance：White crystalline powder.   Application: 1>Bleaching agent for paper pulps ; 2>Waste water treatment； 3>Reducing and sulphonating agent for chemical synthesis ； 4>Bleaching agent for textiles； 5>Colors stripper and deoxidization ; 6>Floating agent for mining industry; 7>Auxiliary chemical in tanning process .   Product Specification:   ITEM FOODGRADE TECHGRADE TECHGRADE Na2SO3 >97% >96% >93% FREE ALKALI <0.1% <0.4% <0.4% IRON <0.002 <0.005% <0.005% WATER INSOLUBLE MATTER <0.02% <0.05% <0.05% SODIUM SULFATE(Na2SO4) <2.5% --------- ---------- NACL <0.1% ---------- ---------