Lanthanum (III) oxide (99.999 La) (REO) PURATREM
Lanthanum oxide
CAS: 1312-81-8;12680-02-3
Molecular Formula: La2O3
Lanthanum (III) oxide (99.999 La) (REO) PURATREM - Names and Identifiers
Lanthanum (III) oxide (99.999 La) (REO) PURATREM - Physico-chemical Properties
| Molecular Formula | La2O3 |
| Molar Mass | 325.81 |
| Density | 6.51g/mLat 25°C(lit.) |
| Melting Point | 2315 °C |
| Boling Point | 4200 °C |
| Flash Point | 4200°C |
| Water Solubility | INSOLUBLE |
| Appearance | White powder |
| Specific Gravity | 6.51 |
| Color | White to yellow |
| Merck | 14,5363 |
| PH | 9.0 (50g/l, H2O, 20℃)(slurry) |
| Storage Condition | no restrictions. |
| Stability | Stable. |
| Sensitive | Hygroscopic |
| MDL | MFCD00011071 |
| Physical and Chemical Properties | Character white orthorhombic crystal system or amorphous powder. melting point 2307 ℃ boiling point 4200 ℃ relative density 6.51 solubility soluble in acid, ethanol, ammonium chloride, insoluble in water, ketone. |
| Use | Used for making special alloys, optical glass, refractory materials, etc |
Lanthanum (III) oxide (99.999 La) (REO) PURATREM - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R36 - Irritating to the eyes |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S39 - Wear eye / face protection. |
| WGK Germany | 1 |
| RTECS | OE5330000 |
| TSCA | Yes |
| HS Code | 28469000 |
| Toxicity | LD50 orally in Rabbit: > 9968 mg/kg |
Lanthanum (III) oxide (99.999 La) (REO) PURATREM - Reference
| Reference Show more | 1. Wang Xueqi, Zhang Zhen, Xu Hongyan, et al. Two-enzyme step-by-step enzymatic extraction of soluble calcium from sheep bone [J]. Food and Fermentation Industry 2019(15). |
Lanthanum (III) oxide (99.999 La) (REO) PURATREM - Properties
Open Data Unverified Data
Lanthanum oxide is an oxide of lanthanum (III) and is a white powder at room temperature.
application
rare earth lanthanum oxide is widely used and plays an important role in glass, ceramics, electronics and other fields.
use
- used to make special alloys, optical glass, refractory materials, etc.
- mainly used to make precision optical glass and optical fiber. It is also used in the electronic industry as ceramic capacitors and piezoelectric ceramic admixtures. It is also used as a raw material for preparing lanthanum boride and as a catalyst for petroleum separation and refining.
- used as analytical reagents, raw materials for optical glass and refractory materials
- mainly used in the manufacture of cameras, microscopes, various optical glass components and optical fibers required, which can improve refractive properties. It also has certain uses in the electronic ceramic industry and catalyst preparation. Precursors for LAMOX fast ionic conductors and superconductors.
production method
the raw material of the extraction method is rare earth nitrate solution after cerium removal, which contains about LaO3 50%, CeO2 trace, Pr6O 116%-7%, Nd2O3 30%. Formulated into ΣRxOy320~330g/L rare earth nitrate solution, using neutral phosphine extractant dimethylheptyl phosphonate (P350), using P350-kerosene system through 35~38 stage extraction separation, so that lanthanum and other rare earth separation, lanthanum-containing raffinate by ammonia water neutralization, oxalic acid precipitation, and then by filtration, burning, the preparation of lanthanum oxide finished products. Its La2(C2O4)3 → La2O3 3CO2 3CO
Last Update：2024-04-09 19:43:38
Lanthanum (III) oxide (99.999 La) (REO) PURATREM - Nature
Open Data Verified Data
lanthanum oxide is a white amorphous powder. d 6. 51; Melting point> 2000 °c. Slightly soluble in water, soluble in acid and the formation of the corresponding salts. Open Air is easy to absorb carbon dioxide and water, gradually become lanthanum carbonate. The ignition of lanthanum oxide with hydration gives off a large amount of heat.
Last Update：2024-01-02 23:10:35
Lanthanum (III) oxide (99.999 La) (REO) PURATREM - Preparation Method
Open Data Verified Data
prepared by extraction from cerium phosphate lanthanum ore or by burning lanthanum carbonate or lanthanum nitrate. It can also be prepared by thermal decomposition of lanthanum oxalate.
Last Update：2022-01-01 09:06:39
Lanthanum (III) oxide (99.999 La) (REO) PURATREM - Introduction
It is hygroscopic and easy to absorb moisture. Can quickly absorb water and carbon dioxide in the air, should be placed in a sealed container. Soluble in inorganic acid to form salt, insoluble in water. It's irritating.
Last Update：2022-10-16 17:13:14
Lanthanum (III) oxide (99.999 La) (REO) PURATREM - Use
Open Data Verified Data
used in the manufacture of special alloy precision optical glass, high refractive optical fiber board and camera, camera, microscope lens and advanced optical instrument prism. The ceramic industry is used to manufacture ceramic capacitors, piezoelectric ceramic dopants, and X-ray luminescent materials such as lanthanum bromide powder. Used as a catalyst for a variety of reactions. Lanthanum oxide is impregnated with lithium oxide or zirconium oxide for the fabrication of ferrite magnets. Used to improve the temperature dependence and dielectric properties of barium titanate, strontium titanate Ferroelectrics, and to manufacture fiber optics and optical glasses.
Last Update：2022-01-01 09:06:39
Lanthanum (III) oxide (99.999 La) (REO) PURATREM - Safety
Open Data Verified Data
inhalation of dust, occupational pneumoconiosis, can stimulate the mucosa of the eyes. Staff should be protected. If the skin and eyes are touched, they should be immediately rinsed with flowing water. The working environment should have good ventilation conditions. Store in a ventilated, dry place. Should pay attention to moisture, to prevent packaging damage.
Last Update：2022-01-01 09:06:40
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