2843

Colloidal precious metals; inorganic or organic compounds of precious metals, whether or not chemically defined; amalgams of precious metals.

28431000

Colloidal precious metals

28432100

Silver compounds:Silver nitrate

28432900

Other

28433000

Gold compounds

28439000

Other compounds; amalgams

2844

Radioactive chemical elements and radioactive isotopes (including the fissile or fertile chemical elements and isotopes) and their compounds; mixtures and residues containing these products.

284410

Natural uranium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing natural uranium or natural uranium compounds:

28441010

Natural uranium and its compounds

28441090

Other

284420

Uranium enriched in U 235 and its compounds; plutonium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing uranium enriched in U 235, plutonium or compounds of these products:

28442010

Uranium and its compounds; plutonium and its compounds