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URBANMINES TECH. LIMITED is a worldwide supplier of Rare Metal Oxides and Compounds, Rare-Earth Oxides and Compounds, and high purity raw materials. It was established in 2010 to OEM and supply high quality Rare Metal and Rare Earth products to our customers in the research and development fields.

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Lanthanum Carbonate

Lanthanum Carbonate is a salt formed by lanthanum(III) cations and carbonate anions with the chemical formula La2(CO3)3. Lanthanum carbonate is used as a starting material in lanthanum chemistry, particularly in forming mixed oxides.

Cerium(III) Carbonate

Cerium(III) Carbonate Ce2(CO3)3, is the salt formed by cerium(III) cations and carbonate anions. It is a water insoluble Cerium source that can easily be converted to other Cerium compounds, such as the oxide by heating (calcin0ation). Carbonate compounds also give off carbon dioxide when treated with dilute acids.

Lanthanum Hydroxide

Lanthanum Hydroxide is a highly water insoluble crystalline Lanthanum source, which can be obtained by adding an alkali such as ammonia to aqueous solutions of lanthanum salts such as lanthanum nitrate. This produces a gel-like precipitate that can then be dried in air. Lanthanum hydroxide does not react much with alkaline substances, however is slightly soluble in acidic solution. It is used compatibly with higher (basic) pH environments.

Cerium Hydroxide

Cerium(IV) Hydroxide, also known as ceric hydroxide, is a highly water insoluble crystalline Cerium source for uses compatible with higher (basic) pH environments. It is an inorganic compound with the chemical formula Ce(OH)4. It is a yellowish powder that is insoluble in water but soluble in concentrated acids.

Lanthanum(III) Chloride

Lanthanum(III) Chloride Heptahydrate is an excellent water soluble crystalline Lanthanum source, which is an inorganic compound with the formula LaCl3. It is a common salt of lanthanum which is mainly used in research and compatible with chlorides. It is a white solid that is highly soluble in water and alcohols.

Cerium(III) Oxalate

Cerium(III) Oxalate (Cerous Oxalate) is the inorganic cerium salt of oxalic acid, which is highly insoluble in water and converts to the oxide when heated (calcined). It is a white crystalline solid with the chemical formula of Ce2(C2O4)3. It could be obtained by the reaction of oxalic acid with cerium(III) chloride.

Lanthanum(La)Oxide

Lanthanum Oxide, also known as a highly insoluble thermally stable Lanthanum source, is an inorganic compound containing the rare earth element lanthanum and oxygen. It is suitable for glass, optic and ceramic applications, and used in some ferroelectric materials, and is a feedstock for certain catalysts, among other uses.

Cerium(Ce) Oxide

Cerium Oxide, also known as cerium dioxide, Cerium(IV) Oxide or cerium dioxide, is an oxide of the rare-earth metal cerium. It is a pale yellow-white powder with the chemical formula CeO2. It is an important commercial product and an intermediate in the purification of the element from the ores. The distinctive property of this material is its reversible conversion to a non-stoichiometric oxide.

Praseodymium(III,IV) Oxide

Praseodymium (III,IV) Oxide is the inorganic compound with the formula Pr6O11 that is insoluble in water. It has a cubic fluorite structure. It is the most stable form of praseodymium oxide at ambient temperature and pressure.It is a highly insoluble thermally stable Praseodymium source suitable for glass, optic and ceramic applications. Praseodymium(III,IV) Oxide is generally High Purity (99.999%) Praseodymium(III,IV) Oxide (Pr2O3) Powder lately available in most volumes. Ultra high purity and high purity compositions improve both optical quality and usefulness as scientific standards. Nanoscale elemental powders and suspensions, as alternative high surface area forms, may be considered.

Neodymium(III) Oxide

Neodymium(III) Oxide or neodymium sesquioxide is the chemical compound composed of neodymium and oxygen with the formula Nd2O3. It is soluble in acid and insoluble in water. It forms very light grayish-blue hexagonal crystals.The rare-earth mixture didymium, previously believed to be an element, partially consists of neodymium(III) oxide. Neodymium Oxide is a highly insoluble thermally stable neodymium source suitable for glass, optic and ceramic applications. Primary applications include lasers, glass coloring and tinting, and dielectrics. Neodymium Oxide is also available in pellets, pieces, sputtering targets, tablets, and nanopowder.

Samarium(III) Oxide

Samarium(III) Oxide is a chemical compound with the chemical formula Sm2O3. It is a highly insoluble thermally stable Samarium source suitable for glass, optic and ceramic applications. Samarium oxide readily forms on the surface of samarium metal under humid conditions or temperatures in excess of 150°C in dry air. The oxide is commonly white to off yellow in color and is often encountered as a highly fine dust like pale yellow powder, which is insoluble in water.

Europium(III) Oxide

Europium(III) Oxide (Eu2O3) is a chemical compound of europium and oxygen. Europium oxide has also other names as Europia, Europium trioxide. Europium oxide has a pinkish white color. Europium oxide has two different structures: cubic and monoclinic. The cubic structured europium oxide is almost same as magnesium oxide structure. Europium oxide has negligible solubility in water, but readily dissolves in mineral acids. Europium oxide is thermally stable material that has melting point at 2350 oC. Europium oxide’s multi-efficient properties like magnetic, optical and luminescence properties make this material very important. Europium oxide has an ability to absorb moisture and carbon dioxide in atmosphere.

Gadolinium(III) Oxide

Gadolinium(III) Oxide (archaically gadolinia) is an inorganic compound with the formula Gd2 O3, which is the most available form of the pure gadolinium and the oxide form of one of the rare earth metal gadolinium. Gadolinium oxide is also known as gadolinium sesquioxide, gadolinium trioxide and Gadolinia. The color of the gadolinium oxide is white. Gadolinium oxide is odorless, not soluble in water, but soluble in acids.

Terbium(III,IV) Oxide

Terbium(III,IV) Oxide, occasionally called tetraterbium heptaoxide, has the formula Tb4O7, is a highly insoluble thermally stable Terbium source. Tb4O7 is one of the main commercial terbium compounds, and the only such product containing at least some Tb(IV) (terbium in the +4 oxidation state), along with the more stable Tb(III). It is produced by heating the metal oxalate, and it is used in the preparation of other terbium compounds. Terbium forms three other major oxides: Tb2O3, TbO2, and Tb6O11.

Dysprosium Oxide

As one of the rare earth oxide families, Dysprosium Oxide or dysprosia with chemical composition Dy2O3, is a sesquioxide compound of the rare earth metal dysprosium, and also a highly insoluble thermally stable Dysprosium source. It is a pastel yellowish-greenish, slightly hygroscopic powder, which has specialized uses in ceramics, glass, phosphors, lasers.

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