Cerium Oxalate Powder Chemical Reagent Elements
Rincian produk
| Kelimpahan di kerak bumi: | 0,001% hingga 0,02% | Warna: | Putih keperakan hingga abu-abu |
|---|---|---|---|
| Potensi daur ulang: | Tinggi, karena kekhawatiran pasokan yang kritis | Grup elemen: | Lantanida |
| Dampak lingkungan: | Berpotensi tinggi jika tidak dikelola dengan baik | titik didih: | 1464°C hingga 3507°C (bervariasi berdasarkan elemen) |
| Konduktivitas listrik: | 500KG | Nama Produk: | Bahan Tanah Langka |
| Keadaan fisik: | Padat | Kepadatan: | 6,15 hingga 9,84 g/cm³ (bervariasi berdasarkan elemen) |
| Kegunaan umum: | Elektronik, Magnet, Katalis, Baterai | Sifat magnetik: | Paramagnetik atau feromagnetik tergantung pada elemennya |
| Metode ekstraksi: | Penambangan dan ekstraksi pelarut | Titik lebur: | 798°C hingga 1527°C (bervariasi berdasarkan elemen) |
| kategori: | Elemen kimia | ||
| Menyoroti |
Cerium Oxalate chemical reagent,Rare Earth Oxalate powder,Cerium Oxalate lab compound |
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Deskripsi Produk
1. Basic Information
- Chinese Name: Cerium Oxalate, Cerous Oxalate
- English Name: Cerium(III) oxalate, Cerous oxalate
- Chemical Formula: (usually hydrate, where x is mostly 9 or 10)
- Molecular Weight (Anhydrous): 544.29
- CAS No.:
- Anhydrous: 139-42-4
- Hydrate: 15750-47-7
2. Physical and Chemical Properties
- Appearance: White or pale yellow crystalline powder, odorless and tasteless.
- Solubility: Practically insoluble in water, insoluble in ethanol, diethyl ether, oxalic acid solution and alkaline solution; but soluble in hot dilute hydrochloric acid and dilute sulfuric acid.
- Thermal Stability: Easily decomposes upon heating, first losing crystal water; further high-temperature calcination leads to decomposition into cerium dioxide (), carbon monoxide and carbon dioxide.
- Chemical Characteristics: Chemically stable, cerium exists in +3 valence state with weak oxidizing property.
3. Preparation Method
- Use trivalent cerium salt solutions (such as cerium nitrate or cerium chloride ) as raw materials.
- Add oxalic acid () or ammonium oxalate solution as precipitant.
- Control the pH value to precipitate cerium(III) oxalate, which is then obtained after washing and drying.
4. Main Applications
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Preparation of High-Purity Cerium OxideAs the most important precursor, cerium(III) oxalate can be calcined at high temperature to produce high-purity and high-activity cerium dioxide (), which is widely used in automotive exhaust catalysts, polishing powders, fuel cells, etc.
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Rare Earth SeparationBased on its poor solubility, cerium is precipitated and separated from mixed rare earth solutions to achieve preliminary separation from other rare earth elements.
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Pharmaceutical FieldHistorically used as an antiemetic for the treatment of morning sickness and gastrointestinal discomfort, and also has the effects of invigorating the stomach and sedation.
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Chemical ReagentUsed as an analytical reagent and raw material for the synthesis of other cerium compounds.
5. Safety and Storage
- Safety: Toxic and irritating substance. Avoid ingestion, inhalation or contact with skin and mucous membranes.
- Storage: Keep sealed, dry and stored in a cool place.
Cerium Oxalate
Molecular Formula: Ce₂(C₂O₄)₃
Appearance: Cerium oxalate is a white crystalline powder
Application: Used as a chemical reagent and for the preparation of other cerium salts
|
Item |
Specification |
Testing Standard |
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|
Item |
Ce2(C2O4)3-3N5 |
Ce2(C2O4)3-4N |
Ce2(C2O4)3-4N5 |
Ce2(C2O4)3-5N |
|
|
TREO(wt%) |
≥38 |
≥38 |
≥38 |
≥38 |
|
|
Rare Earth Relative Purity (wt%) |
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|
La2O3/TREO |
≤0.01 |
≤0.005 |
≤0.003 |
≤0.0004 |
GB/T 18115.2 |
|
CeO2/TREO |
≥99.95 |
≥99.99 |
≤99.995 |
≥99.999 |
|
|
Pr6O11/TREO |
≤0.01 |
≤0.002 |
≤0.001 |
≤0.0002 |
|
|
Nd2O3/TREO |
≤0.01 |
≤0.002 |
≤0.001 |
≤0.0002 |
|
|
Sm2O3/TREO |
≤0.001 |
≤0.0005 |
≤0.0002 |
≤0.0001 |
|
|
Y2O3/TREO |
≤0.001 |
≤0.0005 |
≤0.0002 |
≤0.0001 |
|
|
Non-Rare Earth Impurities Content (wt%) |
|||||
|
Fe2O3 |
≤0.002 |
≤0.0015 |
≤0.001 |
≤0.001 |
GB/T 12690 |
|
CaO |
≤0.01 |
≤0.005 |
≤0.003 |
≤0.003 |
|
|
MgO |
≤0.002 |
≤0.001 |
≤0.0005 |
≤0.0005 |
|
|
SiO2 |
≤0.01 |
≤0.005 |
≤0.003 |
≤0.003 |
|
|
ZnO |
≤0.001 |
≤0.001 |
≤0.001 |
≤0.001 |
|
|
Na2O |
≤0.005 |
≤0.002 |
≤0.002 |
≤0.002 |
|
|
PbO |
≤0.005 |
≤0.003 |
≤0.002 |
≤0.002 |
|
|
SO42- |
≤0.03 |
≤0.03 |
≤0.03 |
≤0.03 |
|
|
Cl- |
≤0.07 |
≤0.07 |
≤0.05 |
≤0.05 |
|
|
Note: Cerium oxalate is insoluble in water. Packaging: This product is usually packed in 50kg or 1000kg, and can also be packed according to customer requirements. The packaging material is a woven bag lined with a plastic bag. |
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Sorotan Produk
Cerium oxalate is an oxalate salt of trivalent cerium and an important rare earth compound, often existing in the form of hydrate. 1. Basic Information Chinese Name: Cerium Oxalate, Cerous Oxalate English Name: Cerium(III) oxalate, Cerous oxalate Chemical Formula: (usually hydrate, where x is mostly ...
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