Weifang Rui Desheng Chemical Co., Ltd. mainly produces food grade, industrial grade sodium metabisulfite, there is a need, please contact 0536-5330114, Fax 0536-5300069 food grade industrial grade purity (with Na2S2O5 dollars) ≥ 98% ≥ 97% of sulfur dioxide (SO4) ≥ 65.0% ≥ 65.0% Arsenic (As) ≤ 0.0002% Heavy metals (as Pb) ≤ 0.0005% selenium (Se) ≤ 0.0005% Iron (Fe) ≤ 0.001% ≤ 0.002% Water insoluble ≤ 0.02% ≤ 0.05% PH value 4.0 -4.8 4.0-4.8 Quality index: Appearance: sodium metabisulfite is white or yellow crystalline powder or small crystals of sodium metabisulfite sales information, with a strong smell of SO2, the proportion of 1.4, dissolved in water, acidic aqueous solution, with a strong acid contact with the release SO2 and generates the corresponding salts, long home air, the oxidation of Na2S2O4, so the product can not go far. Higher than 1500C sodium metabisulfite information, namely the decomposition of SO2. Main content (Na2S2O5 meter) sodium metabisulfite price quotes,% ≥ 95.0 iron content (Fe),% ≤ 0.005 Clarity slightly slightly turbid heavy metal content (as Pb),% ≤ 0.001 Arsenic (As),% ≤ 0.0002 Rui Desheng Chemical Co., Ltd. Weifang information metabisulfite, sodium metabisulfite, Rui Desheng Chemical provided by 瑞德胜 chemical. If you have any questions about this information or consultation, please contact us now! Our Company Name: Weifang Rui Desheng Chemical Co., Ltd. (www.ruidesheng.com) Contact: Liqing Jie, or click on "Business League call" direct dialogue with us!