1859 H. Watts tr. L. Gmelin XIII. 86 It immediately forms a black solution, which after a few hours solidifies into a magma of black needles of indin-potassium.
1873 I. Remsen tr. R. Fittig ii. 390 Indin..dissolves, when warmed with alcoholic potassa, and, on cooling, indin-potassium, C16H9N2O2K, is deposited in small black crystals.