Explanatory notes
… (1) , each 1 0.1 (2) (1) Other elements are, for example Cr, Cu, Mg, Mn, Ni, Zn. (2) Copper is permitted … aluminate; this is then filtered to eliminate insoluble impurities (iron oxide, silica, etc.). The aluminium is then … By repeated electrolysis, aluminium can be obtained almost completely pure. Aluminium may also be obtained by the …Legal note
… (1) , each 1 0.1 (2) (1) Other elements are, for example Cr, Cu, Mg, Mn, Ni, Zn. (2) Copper is permitted …
