… defined, other than compounds which are also carbides of heading 28.49. …
Explanatory notes
… defined, other than compounds which are also carbides of heading 28.49. The four groups of compounds covered by this … strontium, antimony, nickel, titanium, zirconium, tin, lead, etc. This heading does not include compounds of hydrogen with the following elements : oxygen ( headings 22.01 , 28.45 , 28.47 and 28.53 ), nitrogen ( …