Explanatory notes
… in the enamel industry, and in the manufacture of matches, colours, driers, etc. (2) Trilead tetraoxide (Lead saline … is applied either to a very pure saline oxide, more highly coloured and less dense than the common variety, or to lead … red), for preparing anti‑rust paints or mastics and for colouring sealing‑wax. It is also used as a pottery glaze. …