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Gallium(III) oxide

Physical properties Uses Preparation Reactions
Gallium(III) oxide
Gallium(III) oxide structure
CAS No.
12024-21-4
Chemical Name:
Gallium(III) oxide
Synonyms
Ga2-O3;Gallia;β-Ga2O3;Gallic oxide;GALLIUM OXIDE;ium(III) oxide;galliumtrioxide;GalliuM(Ⅵ) oxide;Gallium(Ⅲ) oxide;Gallium trioxide
CBNumber:
CB0268996
Molecular Formula:
Ga2O3
Formula Weight:
187.44
MOL File:
12024-21-4.mol

Gallium(III) oxide Properties

Melting point:
1740 °C
Density 
6.44 g/mL at 25 °C
refractive index 
1.92
storage temp. 
Sealed in dry,Room Temperature
form 
Powder or Lump
Specific Gravity
6.44
color 
White
Water Solubility 
Soluble in acids. Insoluble in water
Merck 
14,4346
Stability:
Stable. Incompatible with magnesium.
InChIKey
QZQVBEXLDFYHSR-UHFFFAOYSA-N
CAS DataBase Reference
12024-21-4(CAS DataBase Reference)
EWG's Food Scores
1
FDA UNII
46F059V66A
EPA Substance Registry System
Gallium trioxide (12024-21-4)
SAFETY
  • Risk and Safety Statements
Safety Statements  24/25
WGK Germany  2
RTECS  LW9650000
TSCA  Yes
HS Code  28259090

Gallium(III) oxide price More Price(47)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 215066 Gallium(III) oxide ≥99.99% trace metals basis 12024-21-4 10g $108 2021-12-16 Buy
Sigma-Aldrich 215066 Gallium(III) oxide ≥99.99% trace metals basis 12024-21-4 50g $383 2021-12-16 Buy
Alfa Aesar 010508 Gallium(III) oxide, 99.999% (metals basis) 12024-21-4 25g $239 2021-12-16 Buy
Alfa Aesar 010508 Gallium(III) oxide, 99.999% (metals basis) 12024-21-4 5g $69.4 2021-12-16 Buy
Strem Chemicals 93-3106 Gallium(III) oxide (99.998%-Ga) PURATREM 12024-21-4 5g $52 2021-12-16 Buy

Gallium(III) oxide Chemical Properties,Uses,Production

Physical properties

White crystals; exists in three crystalline modifications: alpha-, beta-, and gamma-Ga2O3; while the alpha-form is analogous to the corundum form of alumina, the beta-Ga2O3 is isomorphous with theta-alumina; alpha-form converts to beta-modification on calcination at high temperatures (600°C); gamma form is stable at low temperatures; density 6.44 g/cm3 (alpha-Ga2O3), 5.88 g/cm3 (betaGa2O3); melts at 1,725°C; soluble in most acids.
Gallium(III) oxide
Gallium(III) oxide is used in the manufacture of gadolinium gallium garnet as a substrate in bubble domain memories; these are compact devices not requiring the storage power demanded by other memory devices. Gallium(III) oxide is starting material for the preparation of Sr2CuGaO3S, an example of a rare square pyramidal gallium.

Uses

The compound is used in spectroscopic analysis and in preparing gallium arsenide for making semiconductors.

Preparation

Gallium sesquioxide is precipitated in hydrated form upon neutralization of acidic or basic solution of gallium salt. Also, it is prepared by thermal decomposition of gallium salts. Gallium oxide hydroxide, GaOOH [20665-525] on calcinations at high temperatures yields betaGa2O3.

Reactions

Gallium sesquioxide is reduced to gallium suboxide, Ga2O [12024-20-3] by common reducing agents. Also, heating the sesquioxide with gallium metal yields gallium suboxide. Heating with magnesium reduces the oxide to elemental form in a violent reaction:
Ga2O3 + 3Mg →2Ga + 3MgO
Heating with mineral acids yields corresponding gallium salts. When heated with a mixture of hydrogen and arsenic vapors at 600°C, gallium arsenide, GaAs is produced. When heated with alkali metal oxide at 1,000°C, alkali metal gallates, such as K2Ga2O6 are formed.

Chemical Properties

white odourless powder

Uses

In semiconductors; gas sensing; catalysis. Nanostructures as blue and UV light emitters in optoelectronic device applications.
Gallium(III) oxide has been reported in applications in lasers, phosphors, and luminescent materials. Monoclinic ß-Ga2O3 is used in gas sensors and luminescent phosphors and can be applied to dielectric coatings for solar cells. This stable oxide has also shown potential for deep-ultraviolet transparent conductive oxides, and transistor applications. Thin Ga2O3 films are of commercial interest as gas sensitive materials. ß-Gallium(III) oxide is used in the production of Ga2O3-Al2O3 catalyst.

Uses

Gallium(III) oxide is used in vacuum deposition. It is useful for making semiconductor devices, gallium-alumina catalyst, gas sensors, luminescent phosphors and dielectric coatings of solar cells. It shows potential for developing deep-ultraviolet TCOs (Transparent Conductive Oxides) and transparent electrodes for ultraviolet optoelectronic devices. Recent studies report that gallium oxide can be a strong contender for power electronic devices for example, in ultrahigh-voltage power switching applications. Films made of gallium oxide have gained commercial interest owing to their gas sensitive characteristics, and glasses made with gallium oxide are the preferred optical materials for use in advanced technologies.

Production Methods

Gallium oxide is formed during the annealing or heating of semiconductors containing gallium in the microelectronics industry.

General Description

Odorless fine white powder. Insoluble in water.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

GALLIUM(III) OXIDE may react with acids. Heating (to 1292° F) with magnesium causes a violent reduction to metallic slate.

Health Hazard

SYMPTOMS: Symptoms of exposure to GALLIUM(III) OXIDE include reduction of red blood cells and platelets, anemia, skin rash and nausea.

Fire Hazard

Flash point data for GALLIUM(III) OXIDE are not available; however, GALLIUM(III) OXIDE is probably combustible.

Gallium(III) oxide Preparation Products And Raw materials

Raw materials

Preparation Products


Gallium(III) oxide Suppliers

Global( 199)Suppliers
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Henan DaKen Chemical CO.,LTD.
+86-371-66670886
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View Lastest Price from Gallium(III) oxide manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2021-11-30 Gallium(III) oxide
12024-21-4
US $267.00 / KG 1KG 98% 1-20mt Baoji Guokang Bio-Technology Co., Ltd.
2021-11-09 Gallium(III) oxide
12024-21-4
US $9.90 / KG 1KG 99% 5tons Hebei Guanlang Biotechnology Co., Ltd.
2021-11-08 Gallium(III) oxide
12024-21-4
US $10.00 / KG 1KG 99% 20 tons Wuhan wingroup Pharmaceutical Co., Ltd

Gallium(III) oxide Spectrum


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