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Harmonized System
Section VI > Chapter 29 > Heading 2912 > 2912.2
… Cyclic aldehydes without other oxygen function …
Section VI > Chapter 29 > Heading 2914 > 2914.7
… Halogenated, sulphonated, nitrated or nitrosated derivatives …
Section VI > Chapter 29 > Heading 2915 > 2915.50
… Propionic acid, its salts and esters …
Section VI > Chapter 29 > Heading 2918 > 2918.1 > 2918.16
… Gluconic acid, its salts and esters …
Section VI > Chapter 29 > Heading 2904 > 2904.3 > 2904.35
… Other salts of perfluorooctane sulphonic acid …