Weifang Rui Desheng Chemical Co., Ltd. (www.ruidesheng.com) is located in Weifang, Shandong Weifang Binhai Economic Development Zone, Contact: Liqing Jie metabisulfite CAS No. :7681-57-4 EINECS No. :231 -673-0 Formula : Na2S2O5 Molecular Weight: 190.09 Grade: food grade, industrial grade, pharmaceutical grade, photographic grade. Storage: shading sodium metabisulfite, sealed food grade sodium metabisulfite, prohibiting contact with strong acids and strong oxidants Appearance: white or light yellow crystalline powder or small crystals falling stored color gradient yellow Packaging: 25 kg plastic bags, 25 kg of kraft paper bags, polyethylene bags of 25 kg, 1,000 kg of tons of packages or according to customer requirements. Properties: white or light yellow crystalline powder, with a strong smell of SO2 metabisulfite phone manufacturers, the relative density of 1.4, soluble in water and glycerin, acidic aqueous solution, the solubility increases with increasing temperature, slightly soluble in ethanol. Easily exposed in air oxidative deterioration, and continue to emit SO2, and finally the product becomes sodium, so this product should not be stored for a long, heated to 150 ℃ decomposition. Formula: Na2S2O5 Molecular weight:. 190.12 CAS NO :7681-57-4 Appearance: white crystal or powder-like fluid. Packing: woven bag metabisulfite price of 25 kg, 25 kg of brown paper bags, 25 kg polyethylene bags Rui Desheng Chemical Co., Ltd. Weifang Storage: in a dry, cool place for storage.