VERMILLION. “Take some sulphur of which there are three kinds — white, black, and yellow. Break it up on a dry stone, and add to it two parts of quicksilver, weighing them on the scales…put them in a glass jar, stop up the mouth so that no vapour can escape, and put it on a fire to dry. Then place it on a burning fire, and, when it begins to get hot, you will hear a crackling noise inside caused by the quicksilver combining with the burning sulphur. When the noise has stopped, remove the jar at once, open it and take the colour.” (ie: S + Hg –> HgS, a toxic process to say the least.)
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linkedin post 2022-06-29 05:12:48
Nigel Fleming
September 21, 2022