Dysprosium oxide is a kind of white powder. Micro with moisture, in the air can absorb moisture and carbon dioxide. Magnetic oxide Tieqiang many times higher than. Soluble in acid and ethanol. Relative density ( d274 ) 7.81. The temperature of 2340± 10℃. Boiling point is 3900 ℃.

Chinese dysprosium oxide

English name Dysprosium Oxide

Chinese alias acicular dysprosium oxide ( III )

CAS RN 1308-87-8

EINECS 215-164-0

The molecular formula Dy2O3

Molecular weight 372.9982

Labelling of dangerous goods

Risk terminology

Safety terms S24/25;

Physicochemical properties of white crystalline powder.

Melting point ( 2340 ±10)℃

Storage

Sealed dry preservation.

Use

Atomic energy industry, used in nuclear reactor control rod. Magnetic materials. Synthesis of. Lighting source.

Physical and chemical properties

A white crystalline powder, insoluble in water, soluble in acid and ethanol. Exposed in air is easy to absorb carbon dioxide and transformation for dysprosium carbonate.

Preparation

Dysprosium Nitrate Solution and sodium hydroxide solution reaction of dysprosium oxide, after separation of burning, get dysprosium oxide:

3 - Δ2Dy ( OH )→ Dy2O3+3H2O

Main uses

Purpose: used for dysprosium metal raw materials, glass, Nd-Fe-B permanent magnet of the additives, can also be used for metal halogen lamp, magnetic optical memory material, yttrium iron or yttrium aluminum garnet, atomic energy industry. Dysprosium oxide can also be used as a neodymium iron boron system permanent magnets in the magnet, the use of additives, add about 2~3% of dysprosium, can improve its coercivity, past dy demand is not big, but along with the neodymium iron boron magnet demand increased, it became necessary to add the elements must be in 95 ～99, grade. Around 9%, the demand is also increasing rapidly. Dysprosium oxide is also used for dysprosium metal raw materials, glass, Nd-Fe-B permanent magnet of the additives, can also be used for metal halogen lamp, magnetic optical memory material, yttrium iron or yttrium aluminum garnet, atomic energy industry.