Distribution of sulphuric acid between tri‐n‐butyl phosphate and water

The distribution of sulphuric acid between water and 40% by vol. solutions of tri‐n‐butyl phosphate (TBP) in six diluents, and also between water and 40, 60 and 80° solutions of TBP in cyclohexane at 20°, and between water and 40% solution of TBP in cyclohexane and pure TBP at 20°, 30° and 50° has been studied to find the effects of temperature, diluent and TBP concentrations on the extractability of sulphuric acid and on ‘third‐phase formation’.