Rare Earth Metal Salts

Rare earth elements touch every facet of modern life. We benefit from technologies that utilize rare earth metal salts every time we talk on a cell phone, use a computer, receive medical treatment, drive a car, or simply watch TV.

Rare earth halides, nitrates, and acetates shown in the products table below have recently attracted a substantial amount of attention from our customers involved in both academic and industrial research and development. While these metal salts are easily available in research quantities from our online catalog, ProChem also offers exclusive customized high purity forms of the same materials which are manufactured in house to the strict specifications of our diverse high-tech customers.

Table 1. Rare Earth Metal Salts for Advanced Materials and Chemical Applications

Name Product # Purity CAS Number
Europium (III) Acetate 1760 99.999% 62667-64-5
Terbium (III) Acetate 3463 99.99% 100587-92-6
Yttrium Acetate 3829 99.9% 23363-14-6
Europium Chloride hexahydrate 1767 99.9% 13759-92-7
Europium Fluoride 1774 99.9% 13765-25-8
Neodymium (III) Chloride anhydrous 2633 99.9% 10024-93-8
Terbium (III) Fluoride 3479 99.99% 13708-63-9
Yttrium Chloride anhydrous 3844 99.9% 10361-92-9
Gadolinium Nitrate 1834 99.9% 19598-90-4
Lanthanum Nitrate 2152 99.99% 100587-94-8
Ytterbium (III) Nitrate pentahydrate 3806 99.99% 10361-93-0
Yttrium Nitrate hexahydrate 3856 99.9% 13494-98-9

Products offered by Prochem are often used as battery additives,1precursors in catalysis,2  in synthesis of nanomaterials,3 metal organic frameworks (MOFs),4 complex oxides and ceramics,5 as well as for the preparation of photoluminescent and scintillator materials,6,7 to name only a few examples. A wider selection of rare earth-based products can be found on ProChem’s product search page.


  1. Zhao, R., et al. “Lanthanum nitrate as aqueous electrolyte additive for favorable zinc metal electrodeposition.” Nat Commun (2022) 13, 3252.
  2. (a) Wang, Y. et al. “The preparation, characterization, photoelectrochemical and photocatalytic properties of lanthanide metal-​ion-​doped TiO2 nanoparticles” J. Mol. Cat. A: Chemical, (2000), 151, 205; (b) Naumann, S. et al.  “Dual catalysis for selective ring-opening polymerization of lactones: evolution toward simplicityJ. Am. Chem. Soc. (2015), 137, 14439; (c) Kwag, G. “A highly reactive and monomeric neodymium catalyst” Macromol. (2002), 35, 4875.
  3. (a) Benammar, I. et al. “The effect of rare earth element (Er, Yb) doping and heat treatment on suspension stability of Y2O3 nanoparticles elaborated by sol-gel method” J. Mat. Res. Tech. (2020), 9, 12634; (b) Navas, D. et al. “Review on Sol-Gel Synthesis of Perovskite and Oxide Nanomaterials” Gels (2021); 7, 275.
  4. (a) Gustafsson, M. et al. “A family of highly stable lanthanide metal-​organic frameworks: structural evolution and catalytic activity” Chem. Mat. (2010), 22, 3316; (b) Dang, S. et al.  “A layer-​structured Eu-​MOF as a highly selective fluorescent probe for Fe3+ detection through a cation-​exchange approach” J. Mat. Chem. (2012), 22, 169206.
  5. (a) Worsley, M.A. et al. “Chlorine-free, monolithic lanthanide series rare earth oxide aerogels via epoxide-assisted sol-gel method.” J Sol-Gel Sci Technol. (2019), 89, 176; (b) Abe, R. et al. “Photocatalytic activity of R3MO7 and R2Ti2O7 (R = Y, Gd, La; M = Nb, Ta) for water splitting into H2 and O2” J. Phys. Chem. B (2006), 110, 2219.
  6. (a) Seminko, V. et al. “Luminescent colloidal ceria nanoparticles doped with RE3+ ions (RE = Eu, Tb) via cation exchange mechanism” J.  Luminescence (2022), 242, 118605; (b) Regulacio, M. D. et al. “Luminescence of Ln(III) dithiocarbamate complexes (Ln = La, Pr, Sm, Eu, Gd, Tb, Dy)” Inorg. Chem. (2008), 47, 1512.
  7. (a) Wei, Y. L. et al. “Intense upconversion in novel transparent NaLuF4:Tb3+, Yb3+ glass-ceramics” J. Alloys Compds (2013), 578, 385; (b) Pinto, I. C. et al. “Fluorophosphate glasses doped with Eu3+ and Dy3+ for X-ray radiography” J. Alloys Compds (2021), 863, 158382; (c) Moses, W. W. et al. “Prospects for dense, infrared emitting scintillators” IEEE Transactions on Nuclear Sci. (1998), 45, 462.