Explanatory notes
… so specified, see the Explanatory Note to heading 28.42. This sub‑Chapter excludes , inter alia : (a) Salts of … heading 28.46 ), or of mercury ( heading 28.52 ). (d) Phosphides, carbides, hydrides, nitrides, azides , silicides and … (SbF 5 ), a viscous liquid which dissolves in water with a hissing sound to form a hydrate (with 2 H 2 O). These salts …