The Henry's law constant of dimethyl sulphoxide

The partial pressure of dimethylsulphoxide (DMSO) was measured above the pure liquid and aqueous DMSO solutions at various temperatures between 7 and 35 °C. These measurements yielded an expression for the dimensioned Henry's law constant of DMSO as a function of temperature: K_H = 136600-1570 T°C (mol kg^-1atm^-1. The Henry's Law constant at 15 °C was measured as 1.17 ±0.02 × 10⁵ mol kg^-1atm^-1. Despite the solubility of DMSO in water, this result suggests that the solubility is too low for atmospheric DMSO to partition predominantly into the aqueous aerosol. © 1987 Taylor & Francis Group, LLC.