Determination of Solubility of Di(1-Methyl-Heptyl) Methyl Phosphonate in Acidic Solution by Static Equilibrium Method

The solubility of di(1-methyl-heptyl) methyl phosphonate in water and different concentrations of nitric acid solution was measured with static equilibrium method at 273.15-343.15 K under atmospheric pressure. The results show that the solubility of DMHMP in water is 166.69 mg/L at 298.15 K under atmospheric pressure. The solubility of DMHMP in water increases with the increase of the temperature, the experimental data are correlated with Apelblat equation. The solubility of DMHMP in water reduces with the dilution of n-dodecane. The solubility of DMHMP in nitric acid solution increases with the increase of the concentration of nitric acid.