Explanatory notes
… mentioned in the introduction to this sub‑Chapter, this heading includes : (I) SALTS OF NON‑METAL INORGANIC ACIDS OR … or hexacyanoferrates (II), thiourea, guanidine, plastics, adhesives, weed-killers, etc. (b) Sodium thiocyanate … Mercury fulminate and mercuric thiocyanate are excluded (heading 28.52) . (B) Arsenites and arsenates . These …