Harmonized System
Section VI > Chapter 29 > Heading 2930
Explanatory notes
… Sub-Chapter X ORGANO-INORGANIC COMPOUNDS, HETEROCYCLIC COMPOUNDS, NUCLEIC ACIDS AND THEIR SALTS, AND … (or compound derivatives). Headings 29.32 to 29.34 cover heterocyclic compounds. The term " heterocyclic " refers to … two hetero-atoms : (a) One oxygen, one nitrogen : Oxazine group (heading 29.34)* . (b) One sulphur, one …Section XVI > Chapter 84 > Heading 8451
Explanatory notes
… this heading are nothing more than vats, tanks, troughs or other containers, fitted with simple mechanical features such as rollers for leading in the yarn or fabric or for squeezing out excess liquid, stirring paddles, etc. Such …Section VI > Chapter 28 > Heading 2825
… Hydrazine and hydroxylamine and their inorganic salts; other inorganic bases; other metal oxides, hydroxides and peroxides. …