… or not chemically defined, excluding ferrophosphorus; other inorganic compounds (including distilled or conductivity … water of similar purity); liquid air (whether or not rare gases have been removed); compressed air; amalgams, other than amalgams of precious metals. …
Explanatory notes
… or not chemically defined, excluding ferrophosphorus; other inorganic compounds (including distilled or conductivity … water of similar purity); liquid air (whether or not rare gases have been removed); compressed air; amalgams, other … phosphides , e.g., hydrogen phosphides (solid, liquid, gaseous), and the phosphides of arsenic, boron, silicon, …