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Raw materials And Preparation Products

Hazard Information

Material Safety Data Sheet(MSDS)

Questions And Answer

• Chemical Properties

  Colorless Orthorhombi crystal or white crystal. Odorless. Boiling point: 783 ℃. Relative density: 2.55. Soluble in nitric acid, slightly soluble in water. Six crystal water will be dehydrated at 40 ° C and it will become anhydrous. ;

• Uses

  Used as: 
  • Iodine additives for premix in feed industry:  
  • Quality enhancers, preservatives in food industry; 
  • Mouthwash preparation, iodine substitutes and nutritional supplements trace elements and deodorant in pharmaceutical industry;
  • Wheat flour treatment;  
  • Dough conditioner; 
  • Quick-acting oxidant to the dough when making bread by being added to wheat flour.
  ;

• Preparation

  • Direct synthesis process
  Pass through the chlorine into the mixture of iodine and water at 10-15 ° C until the iodine is completely transformed into iodic acid, and then add calcium hydroxide to adjust the pH up to 7. Wash the formed precipitate and dry it at 110 ° C to obtain the finished product.
  • Complex decomposition process 
  Put potassium iodate into a reactor containing distilled water, stir and add calcium nitrate solution slowly to react to form calcium iodate and potassium nitrate reaction solution, then filter off to remove potassium nitrate. Then add arsenic removal agent and heavy metal agent to purify the solution,  and filter off to remove the arsenic and heavy metals and other impurities.  Then get the filtrate to be concentrate by evaporation, cooled and crystallized, centrifugated, dried,  and we can obtain the finished food calcium iodate. Ca (NO3) 2 • 4H2O + 2KIO3 + 2H2O → Ca (IO3) 2 • 6H2O + 2KNO3 ;

• Water solubility (g/100ml)

  Grams that dissolve in per 100 ml of water at different temperatures (° C):
  9×10-2/30℃;0.24g/20℃;0.38g/30℃;0.52g/40℃
  0.65g/60℃;0.66g/80℃;0.67g/90℃ ;

• Content analysis

  Weigh about 600mg of sample accurately, and then dissolve them in the mixed solution of 10mL of 70% perchloric acid and 10ml of water. Heat it to help dissolution If necessary, and dilute with water to 250.0ml. Take 50.0ml of this solution and put it into a 250ml Erlenmeyer flask, add 1ml of 70% perchloric acid and 5g of potassium iodide, stoppered, shake gently and then leave it to stand still for 5min. Then titrate with 0.1mol / L sodium thiosulfate, and then add at a small amount of starch test solution (TS-235 when nearing the end. 0.1mol / L sodium thiosulfate per mL equals to 3.398mg of calcium iodate [Ca (IO3)2·H2O]. ;

• Toxicity

  ADI:  Not allowed to use (FAO / WHO, 2001).
  GR.AS(FDA，§184.1206，2000) ;

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