Explanatory notes
… with one or more molecules of water to form hydroxides. Most oxides are basic since their hydroxides act as bases. … ammonia (heading 28.14), or hydrazine (heading 28.25), and those containing no metal, such as hydroxylamine (heading … ores ( headings 26.0 1 to 26.17 ), scalings, ash, slag, dross, scum or other metalliferous residues ( headings 26.18 …