Harmonized System
Section VI > Chapter 28 > Heading 2849
Carbides, whether or not chemically defined.
Section VI > Chapter 28 > Heading 2850
Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 28.49.
Section VI > Chapter 28 > Heading 2850 > 2850.00
Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 28.49
Section VI > Chapter 28 > Heading 2851
[deleted]
Section VI > Chapter 28 > Heading 2852
Inorganic or organic compounds of mercury, whether or not chemically defined, excluding amalgams.
Section VI > Chapter 28 > Heading 2852 > 2852.10
Chemically defined