Harmonized System
Section VI > Chapter 29 > Heading 2912 > 2912.1 > 2912.11
Methanal (formaldehyde)
Section VI > Chapter 29 > Heading 2912 > 2912.1 > 2912.12
Ethanal (acetaldehyde)
Section VI > Chapter 29 > Heading 2912 > 2912.4 > 2912.41
Vanillin (4-hydroxy-3-methoxybenzaldehyde)
Section VI > Chapter 29 > Heading 2912 > 2912.4 > 2912.42
Ethylvanillin (3-ethoxy-4-hydroxybenzaldehyde)
Section VI > Chapter 29 > Heading 2912 > 2912.50
Cyclic polymers of aldehydes
Section VI > Chapter 29 > Heading 2912 > 2912.60
Paraformaldehyde