Sell ??sodium metabisulfite, sodium metabisulfite, Shanxi, TICO Chemical

 Sodium thiosulfate solution (0.1 mol / L), preparation: anhydrous sodium thiosulfate 26g 0.20g sodium metabisulfite, add boiling over cold water, amount to dissolve into 1000mL food grade sodium metabisulfite, shake 1 month after filtration. Calibration: to take in a constant dry weight basis of 120 ℃ dichromate about 0.15g, accurately weighed, set the iodine bottle, add water to dissolve 50mL, plus KI 2.0g, gently shake to dissolve, add dilute sulfuric acid 40mL, shake, Mesa; placed in the dark for 10 minutes, add water 250mL dilution, when using the droplet to near the end, add starch indicator solution 3mL, continue titration to the disappearance of the blue and visible light green industrial grade sodium metabisulfite, and titration The results of blank test correction. Each 1mL sodium thiosulfate (0.1mol / L) is equivalent to 4.903g of potassium dichromate. According to take the amount of consumption of the liquid with potassium dichromate, calculate the concentration of the solution, that is, too. Temperature above 25 ℃, the reaction solution and should be diluted with water to cool to about 20 ℃. Starch indicator solution take soluble starch 0.5g, add water, 5mL, stir, slowly pour the boiling water into a 100mL, with the added with stirring sodium metabisulfite manufacturers, continue to boil for 2 minutes, let cool, pour out the supernatant, that was. The solution should be Pro with the new. Sodium metabisulfite Fire-fighting measures Hazardous combustion products: sulfides. Fire fighting methods: firefighters must wear fire protective body suits, the wind on fire. Try to move containers from the scene empty Department when the fire. Sodium metabisulfite for dyeing, organic synthesis, printing, leather, pharmaceutical and other industrial sectors on the main purpose; as a preservative, bleach, leavening agent in food processing. For chemical reagents (printing and photography, etc.), used as a bleaching agent, mordant, reducing rubber coagulant, also used in organic synthesis pharmaceutical and spices. Sell ??sodium metabisulfite, sodium metabisulfite, Shanxi, TICO TICO chemical from Shouguang City Chemical Limited. Shouguang City days Chemical Co., Ltd. (www.sgtianchuang.com) strong, credible, Weifang in Shandong chemical products processing industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the day and you work a chemical into the brilliant, for a better future!