HM stocks a wide variety of rare earth materials for use in electronics, petrochemical, metallurgy, machinery, energy, environmental protection, agriculture and other fields. We also offer pure metals and compounds for R&D applications.

Density: N/A
Melting Point: N/A
Solubility: Soluble in water and strong mineral acids
Stability: Slightly hygroscopic

Cerium Ammonium Sulfate is applied as industrial antioxidant and etching agent for the integrated circuit, is also raw material for polishing powder, special glass and ceramics. In steels, Cerium degasifies and can help reduce Sulfides and Oxides, and it is a precipitation hardening agent in stainless steel. Cerium alloys are used in permanent magnets, and in Tungsten electrodes for gas Tungsten arc welding. It is also used in carbon-arc lighting, especially in the motion picture industry.

Grade	99.99%	99.9%	99%
CHEMICAL COMPOSITION
CeO2/TREO (% min.)	99.99	99.9	99
TREO (% min.)	25	25	25
Ce4+/Total Ce (% min.)	97	96	96
Rare Earth Impurities	ppm max.	% max.	% max.
La2O3/TREO Pr6O11/TREO Nd2O3/TREO Sm2O3/TREO Y2O3/TREO	50 50 10 10 10	0.03 0.01 0.05 0.01 0.01	0.5 0.5 0.5 0.05 0.03
Non-Rare Earth Impurities	ppm max.	% max.	% max.
Fe2O3 SiO2 CaO PbO Al2O3 NiO CuO Cl-	5 100 50 10 100 5 5 100	0.005 0.03 0.03 0.002	0.005 0.05 0.05