Dysprosium

Base Information

• Chemical Name: Dysprosium
• CAS No.: 7429-91-6
• Deprecated CAS: 110123-47-2,123943-90-8,123943-90-8
• Molecular Formula: Dy
• Molecular Weight: 162.50
• Hs Code.: 28053012
• European Community (EC) Number: 231-073-9
• UNII: 1D4N45714Q
• DSSTox Substance ID: DTXSID5064673
• Nikkaji Number: J95.200A
• Wikipedia: Dysprosium
• Wikidata: Q1843
• Mol file: 7429-91-6.mol

Synonyms:Dysprosium

Chemical Property of Dysprosium

Chemical Property:

• Appearance/Colour: Metal ingots
• Melting Point: 1412 °C(lit.)
• Boiling Point: 2567 °C(lit.)
• PSA: 0.00000
• Density: 8.559 g/mL at 25 °C(lit.)
• LogP: 0.00000
• Sensitive.: Air & Moisture Sensitive
• Water Solubility.: reacts slowly with H2O; soluble dilute acids [HAW93]
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 0
• Rotatable Bond Count: 0
• Exact Mass: 163.929181
• Heavy Atom Count: 1
• Complexity: 0

Purity/Quality:

99.9% ^*data from raw suppliers

Dysprosium ingot (99.9% REO) ^*data from reagent suppliers

Safty Information:

• Pictogram(s): F
• Hazard Codes: F,C
• Statements: 11-34
• Safety Statements: 22-24/25-36/37/39-33-16-45-27-26-23

MSDS Files:

SDS file from LookChem

Useful:

• Chemical Classes: Metals -> Rare Earth Metals
• Canonical SMILES: [Dy]
• Physical properties: Dysprosium is a dense (specific gravity = 8.540) metal. It is soft, and when cut with aknife, it appears as a silvery metal that oxidizes slowly at room temperatures. The white oxide(Dy2O3) that forms on the outside of the metal sloughs off, exposing a fresh surface of themetal for more oxidation. The oxide of dysprosium is also called dysprosia. Its melting point is 1,412°C, its boiling point is 2,567°C, and its density is 8.540g/cm3.
• Uses: Dysprosium is most commonly used as in Neodymium-iron-boron high strength permanent magnets. While it has one of the highest magnetic moments of any of the rare earths (10.6uB), this has not resulted in an ability to perform on its own as a practical alternative to Neodymium compositions. It is however now an essential additive in NdFeB production. It is also used in special ceramic compositions based on BaTiO formulations. Dysprosium is used, in conjunction with Vanadium and other elements, in making laser materials and commercial lighting. Nanofibers of Dysprosium compounds have high strength and large surface area. Therefore, they can be used to reinforce other materials and as a catalyst. Recent research has examined the use of Dysprosium in Dysprosium-iron-garnet (DyFeG) and silicon implanted with Dysprosium and Holmium to form donor centers. Dysprosium Metal is an important additive for NdFeB permanent magnets to raise the Curie temperature and improve temperature coefficiency. Another most promising use of high purity Dysprosium Metal is in the magnetostrictive alloy TEFENOL-D. There are also other applications for some special master alloys. Dysprosium Metal can be further processed to various shapes of ingots, pieces, wires, foils, slabs, rods, discs and powder. It is highly susceptible to magnetization, they are employed in various data-storage applications, such as in hard disks. There are not many uses for dysprosium. Scientists continue to experiment with it as apossible alloy metal (it has a high melting point) to be mixed with steel to make control rodsthat absorb neutrons in nuclear reactors. There are only a few commercial uses for dysprosium,such as a laser material and as a fluorescence activator for the phosphors used to produce thecolors in the older TV and computer cathode ray tubes (CRTs). When combined with steelor nickel as an alloy, it makes strong magnets.