Harmonized System
Section VI > Chapter 29 > Heading 2927 > 2927.00
… Diazo-, azo- or azoxy-compounds …
Section VI > Chapter 29 > Heading 2909 > 2909.4 > 2909.41
… 2,2'-Oxydiethanol (diethylene glycol, digol) …
Section VI > Chapter 29 > Heading 2912 > 2912.1
… Acyclic aldehydes without other oxygen function …
Section VI > Chapter 29 > Heading 2912 > 2912.2
… Cyclic aldehydes without other oxygen function …
Section VI > Chapter 29 > Heading 2914 > 2914.1
… Acyclic ketones without other oxygen function …
Section VI > Chapter 29 > Heading 2914 > 2914.3
… Aromatic ketones without other oxygen function …