Formula: Dy2O3

CAS No.: 1308-87-8

Molecular Weight: 373.00

Density: 7.81 g/cm3

Melting point: 2,408° C

Appearance: White powder

Solubility: Insoluble in water, moderately soluble in strong mineral acids

Multilingual: DysprosiumOxid, Oxyde De Dysprosium, Oxido Del Disprosio

Dysprosium oxide (Dy2O3):
Appearance: White powder
Formula:Dy2O3
CAS Number:  1308-87-8
EINECS Number:   215-164-0
Molecular Weight:373.00   
Density (d274): 7.81g/cm3.  
Melting point:2340 ±10 ºC
Boiling point :3900 ºC
White crystalline powder, insoluble in water, soluble in acid and ethanol. Exposed to the air when the carbon dioxide is easily absorbed into dysprosium carbonate.
Packing:Inner packing with double sealed film bag into 50kg each drum or as customized.

Physical and chemical properties

Dysprosium(III) fluoride is a colorless hexagonal or rhombic crystal that is insoluble in water and dilute acid and emits hydrogen fluoride by co heating with concentrated sulfuric acid. Add hydrofluoric acid to Dysprosium(III) chloride solution to precipitate crystals.

The application of Dysprosium(III) fluoride is mainly used to prepare dysprosium containing metal alloys. Its application examples are as follows: 1) Prepare rare earth dysprosium alloys by adding the mixture of rare earth oxide and Dysprosium(III) oxide as electrolytic raw materials in the fluoride molten salt system for electrolytic production. 2) A coated Nd-Fe-B sintered magnet is prepared. On the Nd-Fe-B sintered magnet, a transition layer containing dysprosium or terbium is formed inside the magnet in contact with the Dysprosium(III) fluoride or terbium fluoride coating. 3) Prepare a dysprosium metal alloy, calculated by weight percentage, consisting of 10% to 50% dysprosium and 50% to 90% neodymium or 50% to 90% neodymium and 0% to 30% praseodymium.

The prepared FeF3 and H2SiF6 are both soluble in acidic solutions, while KSP (AlF3)=2.015 × 10-5, the generated AlF3 has a low solubility in solution and is insoluble in acidic solutions. Most of it will co precipitate in DyF3. The aluminum in the solution will co precipitate in DyF3. Therefore, in order to reduce the entry of aluminum into rare earth fluoride, it is necessary to remove aluminum as much as possible before fluorination, and to reduce subsequent washing workload, it is also necessary to remove iron, chemical, and silicon impurities from the solution as much as possible. The conventional hydrogen fluoride precipitation method can reduce costs for rare earth separation plants, but due to the difficulty in washing and clarifying after fluoride precipitation, it is not conducive to removing non rare earth impurities. In order to stably produce high-quality Dysprosium(III) fluoride, the process first treats the non rare earth impurities in Dysprosium(III) chloride solution, and then uses a composite fluoride agent to prepare coarse grained Dysprosium(III) fluoride precipitates in Dysprosium(III) chloride solution. Dysprosium(III) fluoride precipitates are washed, filtered, dried, and then vacuum dehydrated to produce high-quality Dysprosium(III) fluoride products.

Basic Info.

Model NO.:DyF3

Composition:Dysprosium

Particle Size:1-3um

CAS 13569-80-7

Einecs:236-992-9

Molecular Weight:219.495209

Melting Point:1360ºC

Boiling Point:2200ºC

Form:Colorless Hexagonal Crystal

Transport Package:Bag or Bottle

Specification:99.9% – 99.99%

Trademark:SUOYI

Origin:Hebei, China

HS Code:2846903200

Production Capacity:2000ton/Month

Particle Size:1-3um

Color:White Pure Fine Powder

Application:metal smelting industry,Electric industry

MOQ:500g

Package:25kg/barrel, 50kg/drum