Calculation of the Solubility of Salts in the Quinary System of NaCl-KCl-MgCl<SUB>2</SUB>-CaCl<SUB>2</SUB>-H<SUB>2</SUB>O Saturated with Sodium Chloride (Part 2)

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  • NaCl-KCl-MgCl<SUB>2</SUB>-CaCl<SUB>2</SUB>-H<SUB>2</SUB>O系の塩化ナトリウム晶出領域の塩濃度 (その2)
  • NaCl-KCl-MgCl2-CaCl2-H2O系の塩化ナトリウム晶出領域の塩濃度-2-
  • NaCl KCl MgCl2 CaCl2 H2Oケイ ノ エンカ ナトリウム

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For estimating the solubility of salts in the quinary system saturated with sodium chloride within the temperature range of 0°C to 100°C, approximation equations were derived from the data on the solubility of sodium chloride in the ternary systems. Also, the authors tried to verify the validity of the equations by experiments, and concluded as follows:<BR>1. The calculated values for potassium chloride, magnesium chloride and calcium chloride of the quinary system were found to coincide with the experimental values within the errors at ±0.05 weight per cent.<BR>2. As a general rule, the errors of the calculated values for sodium chloride became larger if the value of n was larger, but the relative differences were within±4.5 per cent in the case of n<0.25 25 moles/100g solution.<BR>3. It was inferred that the change of the compositions of the solutions by evaporation of the ion exchange membrane brine in the concentration range in which only sodium chloride crystal precipitate could be estimated from the equations.

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