Lanthanum carbonate (lanthanum carbonate), molecular formula for La2 (CO3) 8H2O, generally contain a certain amount of water molecules. It is rhombohedral crystal system, can react with most acids, solubility 2.38×10-7mol/L in water at 25°C. It can be thermally decomposed into lanthanum trioxide at 900°C. In the process of thermal decomposition, it can produce alkali. In the process of thermal decomposition can produce alkali. Lanthanum carbonate can be generated with alkali metal carbonates to form water-soluble carbonate complex salt. Lanthanum carbonate precipitate can be produced by adding slightly excess ammonium carbonate to the dilute solution of soluble lanthanum salt.
Product Name:Lanthanum Carbonate
Molecular Formula:La2 (CO3) 3
Molecular weight:457.85
CAS NO. :6487-39-4
Appearance:: White or colorless powder, easily soluble in acid, airtight.
Uses:. Lanthanum carbonate is an inorganic compound composed of lanthanum element and carbonate ion. It is characterized by strong stability, low solubility and active chemical properties. In industry, lanthanum carbonate can be widely used in ceramics, electronics, medicine and other fields. Among them, lanthanum carbonate plays an important role in ceramics industry, can be used as pigment, glaze, glass additives, etc.; in the field of electronics, lanthanum carbonate can be prepared with high electrical conductivity, low-temperature sintering of strong materials, suitable for the production of high-energy-density capacitors, used in the manufacture of ternary catalysts, cemented carbide additives; in the field of pharmaceuticals, lanthanum carbonate is a common additive to medicines, and can be used to treat In the field of medicine, lanthanum carbonate is a common drug additive, which can be used for the treatment of hypercalcemia, hemolytic uremic syndrome and other diseases, and it is suitable for the treatment of hyperphosphatemia in end-stage renal disease patients. In a word, lanthanum carbonate has many functions and is widely used in modern chemical industry, material science, medicine and other fields.
Packing: 25, 50/kg, 1000kg/tonne in woven bag, 25, 50kg/barrel in cardboard drum.
How to produce:
Lanthanum carbonate is the main compound for the production of lanthanum oxide [1-4]. With the increasingly urgent situation of environmental protection, ammonium bicarbonate, as a traditional precipitant for the preparation of lanthanum carbonate, has been mainly used in industrial production [5-7], although it has the advantages of low cost of production and low impurity content of carbonate obtained. However, due to the eutrophication of NH+4 in the industrial wastewater, which has a greater impact on the environment, the amount of ammonium salts used in the industry has been put forward more stringent requirements. As one of the main precipitants, sodium carbonate, compared with ammonium bicarbonate, in the preparation of lanthanum carbonate in the process of industrial wastewater without ammonia, nitrogen impurities, easier to deal with; compared with sodium bicarbonate, adapt to the environment is strong [8~11]. Lanthanum carbonate with sodium carbonate as precipitant for the preparation of low-sodium rare earth carbonate is rarely reported in the literature, which adopts the low-cost, simple operation of the positive feeding precipitation method, and low-sodium lanthanum carbonate is prepared by controlling a series of reaction conditions.
Precautions for transportation of lanthanum carbonate: Transportation vehicles should be equipped with appropriate types and quantities of fire-fighting equipment and leakage emergency treatment equipment. It is strictly prohibited to mix and transport with oxidizers and edible chemicals. The exhaust pipe of the cargo-carrying vehicle needs to be equipped with flame retardant. When tanker trucks are used for transportation, ground chains should be installed. In order to reduce the static electricity generated by vibration, it is possible to install hole dividers in the tank. It is forbidden to load or unload mechanical equipment and tools that are prone to sparks. In the summer morning and evening transportation is good, in the transport process, to prevent sun and rain and high temperature. Stay away from fire source, heat source and high temperature area during stopover. Road transportation should be carried out in accordance with the prescribed routes, and should not stop in residential areas and densely populated areas. Railroad transportation is prohibited from skidding. Bulk transportation by wooden or cement ships is strictly prohibited. Danger signs and notices shall be posted on means of transportation in accordance with transportation requirements.
Physical and chemical indicators (%).
La2(CO3)3 3N | La2(CO3)3 4N | La2(CO3)3 5N | |
TREO | 45.00 | 46.00 | 46.00 |
La2O3/TREO | 99.95 | 99.99 | 99.999 |
Fe2O3 | 0.005 | 0.003 | 0.001 |
SiO2 | 0.005 | 0.002 | 0.001 |
CaO | 0.005 | 0.001 | 0.001 |
SO42- | 0.050 | 0.010 | 0.010 |
0.005 | 0.005 | 0.005 | |
Cl- | 0.040 | 0.010 | 0.010 |
0.005 | 0.003 | 0.003 | |
Na2O | 0.005 | 0.002 | 0.001 |
PbO | 0.002 | 0.001 | 0.001 |
Acid dissolution experiment | clear | clear | clear |
Note:Products can be produced and packaged according to user specifications.
Post time: Apr-08-2024