Sodium Metabisulfite/ Sodium Pyrosulfite

SODIUM PYROSULFITE Pure and advanced sodium pyrosulfite is a kind of white powder crystals, which is able to abosorb humidity and to be dissolved in water and glycerine and its solution is acid and slightly dissolved in alcohol. In the air. it will be oxyenated slowly in sulfate. Its specific weight is 1.4 and it will be separated at 150 degree. It needs storing with closure. Its molecular formula is Na2S2O5 with molecular quantity 190.10. Use: the new technique of raw material water quality and circling mother liquor is adopted in producing the product, with the original working conditions improved It is used as a reductive agent for nitrile monomer polyreaction, reaching the quality standards of the same kind of the product. It can be widely used as a reductive agent for intermediate product in medical perfume and dyeing material, organic balnch, food storing agent, congelation agent, antisepsisfor brewing, syrup drink, bactericide of cake blanch, and etc.. The product quality has reached the standards of the same kind of the product of Japan and Germany. SPECS : Content : 98% Fe : 0.001% Cl : <0.02% heavy metal Pb : <0.001% Non-dissolved substance : <0.01% sulfied (Na2SO4) : <1.45% AS : <0.0002% chroma : 20 PH(10%of solution) : 3.2-4.5