The Combined Nomenclature (CN), v1:2018
2805 40 10: Mercury in flasks of a net content of 34,5 kg "standard weight", of a fob value per flask of <= € 224
https://www.dst.dk/en/Statistik/dokumentation/nomenklaturer/kn?id=bdccfab4-a71c-4f32-8b96-d3d9ed56013c