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Yttrium oxide ( yttrium oxide ) is a white to slightly yellow powder, insoluble in water and soluble in acid, alkali, mainly used for manufacturing microwave magnetic materials and military industry with important materials ( single crystal; yttrium iron garnet, YAG composite oxide ), also used as optical glass, ceramics, large additive screen TV with high brightness fluorescent powder and other tube coating. Also used in the manufacture of thin film capacitors and special refractory material, and a high pressure mercury lamp, laser, storage element, magnetic bubble materials. Sintering when adding yttrium oxide can effectively reduce the grain size of tungsten alloy.

Chinese Name: yttrium oxide

English Name: yttrium oxide; yttria

Chemical formula: Y2O3

Molecular weight: 225.81

Density: 5.01 g/cm3

Melting point ( c ): 2410

Properties: white or slightly yellow powder

Dissolve: insoluble in water and soluble in acid, alkali.

Uses: mainly used for manufacturing microwave magnetic materials and military industry with important materials ( single crystal; yttrium iron garnet, YAG composite oxide ), is also used in optical glass, ceramic materials, additives, big screen TV with high brightness fluorescent powder and other tube coating. Also used in the manufacture of thin film capacitors and special refractory material, and a high pressure mercury lamp, laser, storage element, magnetic bubble materials. Sintering when adding yttrium oxide can effectively reduce the grain size of tungsten alloy.

Preparation or sources: decomposition fergusonite from mixed rare earth solution by extraction, acid leaching, extraction, and direct concentration, burning and.

Other: exposed to air and easy to absorb carbon dioxide and water.

Exposure limits: the United States TWA:1mg/m3, ACGIH British TWA:1mg/m3 British STEL:3mg/m3 Germany MAK:5mg/m3 determination: filter collection, acid desorption, atomic absorption analysis of pathways: inhalation, ingestion, skin and eye contact

Health hazards: irritation of the eyes; animal test shows that can damage the liver, lung function

Skin contact: contact treatment: with soap, water washing

Eye contact: flush

Inhalation: to move the patient to fresh air, carrying out artificial respiration, medical treatment

Ingestion: to drink plenty of water, emetic ( coma patients except)

Protection measures: respiratory protection : use appropriate respirator

Eye protection: wear protective goggles and masks

Protective clothing: wear clean intact protective equipment

Other: equipped with emergency eye drops; regular eye examination, pulmonary