Na2S2O5 97% Purity Sodium Metabisulfite Preservative For Leather Tanning Industry - Product

Other Specification :  SODIUM METABISULFITE FOOD GRADE - - - - 1.Grade | Food Grade | 2.Purity | 97% | 3.Molecular Formula | Na2S2O5 | 5. CAS No | 7681-57-4 | 6. HS CODE | 28321000 | 7. EINECS No | 231-673-0 | - - - - Nature: White Or Light Yellow Crystalline Powder , Relative Density Is 1.4 . Soluble In Water (when20 C, 54g/100ml Water; When 100 C, 81.7g/100ml Water), Acidic Aqueous Solution. Soluble In Glycerine, Slightly Soluble In Ethanol. Moisture Easily Decomposed, Exposed In The Air Easily Oxidized Into Sulfate. Exposure To Emit Sulfur Dioxide And Acid Generated The Corresponding Salts. Heated To 150 C Decomposition. Usage: Pharmaceutical Industry For The Production Of Chloroform, Benzene, Styrene Sulfone, And Formaldehyde. Rubber Industry As A Coagulant. Bleached Cotton Printing And Dyeing Industry As The Dechlorination Agent, Cotton Scouring Agent. Leather Tanning Industry For Processing, Make The Leather Soft, Plump, Tough, Waterproof, Bending, Wear And Other Properties. The Chemical Industry For The Production Of Vanillin Hydroxyl, Hydroxylamine Hydrochloride And So On. Sensitive Industries Such As Reagent. The Food Industry As A Bleaching Agent, Preservatives, Leavening Agent, Antioxidant, Color Agents And The Insurance Agent. According To China GB2760-86 Provides That: As A Preservative For The Wine, The Greatest Use Of 0.25g/kg; As Bleaching Agent For Glucose, Sugar, Bamboo, Rattan And Other Mushrooms, No More Than 0.45g/kg; Residue (SO2 Total), Bamboo Shoots, Mushrooms Are Not Allowed More Than 0.025k/kg. Specification: Sodium Metabisulfite Food Grade - - - - Item | Chinese Standard | Company Standard | GB1893-2008 | Main Content(Na2S2O5) | 96.5 | 97.5 | Fe(As Content Fe) | 0.003 | 0.0015 | Clarity | Pass Test | Clear | Heavy Metal Content

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