Physical Solubility of Hydrogen Sulfide in Aqueous Solutions of 2-(tert-Butylamino)ethanol

The physical solubility of hydrogen sulfide in aqueous solutions of 2-(tert-butylamino)ethanol neutralized with hydrochloric acid was measured in this work. Measurements were made over the temperature range 25 °C to 40 °C and the amine concentration range 0 to 50 mass %. The solubility data exhibit a minimum in the solubility with amine concentration. The data were correlated using the van-Krevelen−Hoftijzer method for the “salting-out” effect up to the minimum solubility and by a new empirical method over the entire range of amine concentration.