Sodium pyrosulfite - Product

Brand : HL

Other Specification : 1. Description: Sodium Pyrosulfite(Na2S2O5 ) HS CODE28321000 2. Properties: White Or Light Yellow Crystal Powder, A Strong Smell Of Sulfur Dioxide,relative Density Is 1.4, Easy To Dissolve In Water And Glycerin, Water Solution. It Has Acidity,and Its Solubility Will Become Large While Raising The Temperature And Is Less To Dissolve In Ethanol. 3.Packing: 25kgs/Bag 25mts/20' FCL 4. Specification: Specification For Food Grade And Industry Grade : Item Quality Index Food Grade Industry Grade Purity ( As Na2S2O5) 98.0% Min 96.0% Min Sulfur Dioxide( SO2) 65.0% Min 65.0% Min Arsenic ( As ) 0.0002% Max - Heavy Metals ( As Pb ) 0.0005% Max - Selenium (Se ) 0.0005% Max - Iron (Fe) 0.001% Max 0.002% Max Water Insoluble 0.02% Max 0.05% Max PH Value : 4.0-4.8 4.0-4.8 Remark : Conformed With FCC V And E 223 Standard Specification For Pharmaceutical Grade And Photo Grade Item Quality Index Pharmaceutical Grade Photo Grade Purity ( As Na2S2O5) 98.0% Min 98.0% Min Sulfur Dioxide( SO2) 65.0% Min 65.0% Min Thiosulphate ( As S2O3) : 0.05 % Max 0.05% Max Chloride ( As CL-) : 30 Ppm Max 50ppm Max Arsenic ( As ) : 1ppm Max 1ppm Max Lead ( Pb ) : 1 Ppm Max 2ppm Max Copper (Cu) : 1 Ppm Max 1ppm Max Iron (Fe ) : 5 Ppm Max 5ppm Max Mercury (Hg) : 0.1ppm Max 1ppm Max Chromium (Cr) : 1 Ppm Max - Selenium (Se ) : 1 Ppm Max 5ppm Max Zinc (Zn) 1 Ppm Max 1ppm Max Cadmium (Cd ) 1ppm Max - Nickel (Ni) 1ppm Max - Na2SO3 + Na2SO4 1.5% Max - PH Value : 4.0-4.8 4.0-4.8 Remark : Conformed With USP Standard 5. Handling And Storage: External Polypropylene Woven Bag, Polyethylene Plastic Bag Lining. 6. Applications: 1. Dyeing Mordant, Dechlorinating Agent For Washed Fabric, Medical Deoxidizer And Sulfonating Agent, Bone Black For Bamboo, Wood And Paper Fiber, Non-ferrous Mineral Separation Agent, Waste Water Disposing Agent, Rubber Coagulator. 2. Food-grade Sodium Metabisulfite. Main Purp

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