抄録
The effects of some I-I electrolytes (potassium chloride, potassium bromide, potassium nitrate, potassium thiocyanate, sodium chloride, sodium bromide, sodium nitrate, and sodium thiocyanate) on the solubilities and the dyeing properties of Methyl Orange are examined.
The solubilities of Methly Orange in presence of some of electrolytes at 50°C are determined.
The solubilities of Methyl Orange in potassinum salt solutions decrease with increase of electrolyte concentration owing to salting out effects.
The solubilities of Methyl Orange in sodium salt solutions decrease with increase of electrolyte concentration owing to salting out effects and common ion effects.
The effect of inorganic anion on the solubilities of Methyl Orange is in the order of chloride ion, bromide ion, nitrate ion and thiocyanate ion, and this order coincides with lyotropic series of anion, that is, the solubility is smallest in chloride solutions and largest in thiocyanate solution.
The effects of electrolyte ions on the solubilities are considered to be that the hydrated water arround Metyl Orange dye ion is removed by the electrolyte ion, and dye ions become unstable, and precipitate. So, the solubilities is less in presence of upper electrolyte ions in lyotropic series than in presence of lower electrolyte ions.
The effects of I-I electrolytes on the adsorption of Methyl Orange on cellophane are examined.
The effects of inorganic anion on the adsoption of Methyl Orange are in the order of chloride ion, bromide ion, nitrate ion and thiocyanate ion, and this order coincides with the lyotropic series of anion, that is, the adsorption is largest in presence of chlorides, and the smallest in presence of thiocyanates.
