… by roasting, magnetic separation, or with acids or other solvents, to remove impurities such as sulphur, arsenic, … can also produce very pure tin. * * * Pure tin is silvery‑white and very shiny. It is not very ductile, but is …
… mercuric chloride or other mercuric salts, in gold or silver metallurgy, etc. (c) Trimercury dioxide sulphate … Colourless crystals, soluble in water and toxic. Used for silvering mirrors. (9) Mercury fulminate (presumably …
