Absorption of H₂S into aqueous Fe₂(SO₄)₃ solutions was carried out through a flat gas-liquid interface in an agitated vessel under atmosphere. The liquid phase mass transfer coefficients and the absorption rates were measured by experiments. The predicted liquid phase mass transfer coefficients with a dimensionless empirical equation involving Sherwood, Reynolds and Schmidt numbers were also correlated. The Sherwood number was varied according to the Re^0.39 and the Sc^-0.15 in 0.01 M Fe₂(SO₄)₃ aqueous solution system. The observed liquid phase mass transfer coefficients were increased as the concentration of Fe₂(SO₄)₃, the liquid phase stirring speed and the experimental temperature increased. The ratio of the observed liquid phase mass transfer coefficient to the predicted liquid phase mass transfer coefficient was always larger than 1 and it was incr eased when the liquid phase stirring speed increased. The absorption rate was increased when the experimental temperature decreased.