Sodium Metabisulfite [Na2S2O5] [CAS_7681-57-4] FCC/Photo Grade 97+% for Sale, White/Slightly Yellow Crystal Powder (50 Lbs Bag) by Wintersun Chemical

Sodium Metabisulfite is an inorganic compound, a white crystalline or powder solid with a slight sulfur odor. It has widely uses in the industries. It is used as a preservative and antioxidant in food industry, It is also used as a sanitizer, a disinfectant, and a cleaning agent in homebrewing and winemaking to sanitize equipment. Other uses including used to precipitate gold from auric acid, used in waste treatment, used as a bleaching agent, used in the oil and gas industry as a corrosion inhibitor/oxygen scavenger. Synonyms: Sodium Pyrosulfite, Sodium Pyrosulphite, Sodium Metabisulphite, Sodium Disulfite, Anhydrous Sodium Bisulfite, ABS; CAS No: 7681-57-4; Molecular Formula: Na2S2O5; Molar Mass: 190.1 g/ mol

• Sodium Metabisulfite uses: As Photographic chemicals, food additive, laboratory reagent, drug production, water treatment, textile manufacture, and other chemical processes.
• Appearance: White or slightly yellow crystal powder
• Assay (Na2S2O5): 97% Min
• Insoluble in water: 0.03% Max; Arsenic: 0.002% Max; Heavy Metal as Pb: 0.002% Max; Iron: 0.003% Max; pH: 4.0-4.6; Odour: Pungent sulfur dioxide odor.
• Food / Photo Grade