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| CAS No.: | 7429-91-6 |
|---|---|
| Name: | Dysprosium |
| Molecular Structure: | |
|
|
|
| Formula: | Dy |
| Molecular Weight: | 162.50 |
| Synonyms: | UNII-1D4N45714Q;Dy; |
| EINECS: | 231-073-9 |
| Density: | 8.559 g/mL at 25 °C(lit.) |
| Melting Point: | 1412 °C(lit.) |
| Boiling Point: | 2567 °C(lit.) |
| Solubility: | reacts slowly with H2O; soluble dilute acids [HAW93] |
| Appearance: | Metal ingots |
| Hazard Symbols: |
 F
|
| Risk Codes: | 11 |
| Safety: | 22-24/25-36/37/39-33-16 |
| PSA: | 0.00000 |
| LogP: | 0.00000 |
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Specification
The Dysprosium, with the CAS registry number 7429-91-6, is also known as Dysprosium icp standard. It belongs to the product categories of Catalysis and Inorganic Chemistry; Chemical Synthesis; Dysprosium; Dysprosium Metal and Ceramic Science; Metals. Its EINECS number is 231-073-9. This chemical's molecular formula is Dy and molecular weight is 162.50. What's more, its IUPAC name is dysprosium. Dysprosium is a rare earth element that has a metallic, bright silver luster. It is soft enough to be cut with a knife, and can be machined without sparking if overheating is avoided.
Properties: Dysprosium combines with various non-metals at high temperatures to form binary compounds with varying composition and oxidation states +3 and sometimes +2, such as DyN, DyP, DyH2 and DyH3; DyS, DyS2, Dy2S3 and Dy5S7; DyB2, DyB4, DyB6 and DyB12, as well as Dy3C and Dy2C3.
Dysprosium metal vigorously reacts with all the halogens at above 200 °C:
2 Dy (s) + 3 F2 (g) → 2 DyF3 (s) [green]
2 Dy (s) + 3 Cl2 (g) → 2 DyCl3 (s) [white]
2 Dy (s) + 3 Br2 (g) → 2 DyBr3 (s) [white]
2 Dy (s) + 3 I2 (g) → 2 DyI3 (s) [green]
Dysprosium metal tarnishes slowly in air and burns readily to form dysprosium(III) oxide:
4 Dy + 3 O2 → 2 Dy2O3
Preparation: Dysprosium is never found in nature as a free element, though it is found in various minerals, such as xenotime. Dysprosium is obtained primarily from monazite sand, a mixture of various phosphates. The metal is obtained as a by-product in the commercial extraction of yttrium. In isolating dysprosium, most of the unwanted metals can be removed magnetically or by a flotation process. Dysprosium can then be separated from other rare earth metals by an ion exchange displacement process. The resulting dysprosium ions can then react with either fluorine or chlorine to form dysprosium fluoride, DyF3, or dysprosium chloride, DyCl3. These compounds can be reduced using either calcium or lithium metals in the following reactions:
3 Ca + 2 DyF3 → 2 Dy + 3 CaF2
3 Li + DyCl3 → Dy + 3 LiCl
Uses: Dysprosium is used for its high thermal neutron absorption cross-section in making control rods in nuclear reactors, for its high magnetic susceptibility in data storage applications, and as a component of Terfenol-D. Dysprosium is used, in conjunction with vanadium and other elements, in making laser materials. Dysprosium is one of the components of Terfenol-D, along with iron and terbium. Dysprosium iodide and dysprosium bromide are used in high intensity lighting.
When you are using this chemical, please be cautious about it as the following:
This chemical may catch fire in contact with air, only need brief contact with an ignition source. It has a very low flash point or evolves highly flammable gases in contact with water. What's more, it is highly flammable, so you should take precautionary measures against static discharges and keep away from sources of ignition - No smoking. You should also avoid breathe dust and contact with skin and eyes. When using it, you need wear suitable protective clothing, gloves and eye/face protection.
You can still convert the following datas into molecular structure:
(1)SMILES: [Dy]
(2)Std. InChI: InChI=1S/Dy
(3)Std. InChIKey: KBQHZAAAGSGFKK-UHFFFAOYSA-N