Thulium metal Metals Lanthanum metal Cerium metal Praseodymium metal Neodymium metal Samarium metal Europium metal Gadolinium metal Terbium metal Dysprosium metal Holmium metal Erbium metal Thulium metal Ytterbium metal Lutetium metal Scandium metal Yttrium metal Thulium metal CAS # 7440-30-4 Molecular Formula Tm Molecular Weight 168.93 gmol-1 3N (99.9%) 33% 33% 4N (99.99%) 66% 66% 5N (99.999%) 100% 100% Interested in this Product?YesNoGET A QUOTE