... .: 1314-13-2 ZnO 81.39 White or a little yellow powder, density 5.606, fusion point: 1975°C.It is ... and alkaline solution, insoluble in water or ethanol. It is yellow color at the high temperature, resume being white after cooling. characters ... and alkaline solution, insoluble in water or ethanol. It is yellow color at the high temperature, resume being white after cooling.