Explanatory notes
… 28.41 ‑ Salts of oxometallic or peroxometallic acids. 2841.30 ‑ Sodium dichromate 2841.50 ‑ Other chromates and … Natural lead molybdate (wulfenite) is excluded ( heading 26.13 ). (5) Tungstates (wolframates) . Tungstates, … used in the manufacture of matches and in pyrotechnics. (13) Other salts of oxometallic acids or peroxometallic acids …