Cerium Oxalate Powder Chemical Reagent Elements
Ürün Ayrıntıları
| Bollukyer kabuğu: | %0,001 ila %0,02 | Renk: | Gümüş beyazından griye |
|---|---|---|---|
| Geri dönüşüm potansiyeli: | Kritik arz endişeleri nedeniyle yüksek | Eleman grubu: | lantanitler |
| Çevresel etki: | Düzgün yönetilmezse potansiyel olarak yüksek | kaynama noktası: | 1464°C ila 3507°C (elemana göre değişir) |
| Elektrikiletkenlik: | Orta ila Yüksek | Ürün adı: | Nadir Toprak Malzemesi |
| Fiziksel durum: | Sağlam | Yoğunluk: | 6,15 - 9,84 g/cm³ (elemana göre değişir) |
| Ortak kullanımlar: | Elektronik, Mıknatıslar, Katalizörler, Piller | Manyetik özellikler: | Elemente bağlı olarak paramanyetik veya ferromanyetik |
| Ekstraksiyon yöntemi: | Madencilik ve solvent ekstraksiyonu | Erime noktası: | 798°C ila 1527°C (elemana göre değişir) |
| kategori: | Kimyasal öğeler | ||
| Vurgulamak |
Cerium Oxalate chemical reagent,Rare Earth Oxalate powder,Cerium Oxalate lab compound |
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Ürün Tanımı
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
-
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.
-
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.
-
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.
-
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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Ürün Özellikleri
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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