Explanatory notes
… air produces first unmelted lead oxide or massicot, in the form of a pale yellow powder, and then, when the temperature … oxide, in orange‑yellow or reddish powder or scales. The term “litharge” covers both these products, but is applied … (Lead saline oxide, red lead, minium) (approximate formula Pb 3 O 4 ). Obtained from unmelted lead monoxide …