γ-氧化铝

γ-氧化铝（CAS 12737-16-5）：分子式 Al2O3、分子量 101.961。

产品概览

应用领域

登记用途：Uses: CIR ingredient: Alumina、Used to produce aluminum、Also used as an abrasive、catalyst、absorbent (petroleum industry)、filler for coatings、food additive、Also used in ceramics、glass、refractories、electrical insulators and resistors、fluxes、dental cements、and chromatographic applications、[CHEMINFO] alpha-Alumina is the main component of technical grade alumina. Corundum is natural Al2O3. Emery is an impure crystalline variety of Al2O3. [NIOSH]、Aluminum Producing [Category: Industry]、Petroleum Production and Refining [Category: Industry]、Soldering [Category: Heat or Machine]、Painting (Pigments、Binders、and Biocides) [Category: Paint]、Cement Producing [Category: Industry]、Glass Manufacturing [Category: Industry]、Production of aluminum、manufacture of abrasives、ceramics、electrical insulators、catalyst and catalyst supports、paper、spark plugs、crucibles and laboratory wares、adsorbent for gases and water vapors、chromatographic analysis、light bulbs、artificial gems、heat resistant fibers、food additive (dispersing agent).、Activated alumina is、an effective desiccant for gases and vapors in the petroleum industry. Also used as catalyst or catalyst carrier in chromatography、and in water purification.、Alumina、activated、In hollow-fiber membrane units used ... in water desalination ... industrial ultrafiltration ... hemodialysis.、Use of aluminum oxide fiber to reinforce aluminum ... avoiding ... strength- degrading chemical attack.、For more Uses (Complete) data for Aluminum oxide (6 total)、please visit the HSDB record page.、Aluminium oxide's most significant use is in the production of aluminium metal、although it is also used as an abrasive due to its hardness and as a refractory material due to its high melting point. (L758)、Aluminium oxynitride is currently the crucial outer layer of experimental transparent armor being considered by the US Air Force for the windows of armored vehicles. Other applications include semiconductors and retail fixtures. (L768)、Use Classification: Cosmetics -> Opacifying、Viscosity controlling、Abrasive、Industry Uses: Intermediate、Heat stabilizer、Processing aids、specific to petroleum production、Pigment、Density modifier、Adhesion、cohesion promoter、Hardener、Adsorbent、Oxidizing agent、Surface modifier、Propellants、non-motive (blowing agents)、Dehydrating agent (desiccant)、Absorbent、Flux agent、Not Known or Reasonably Ascertainable、Crystal growth modifiers (nucleating agents)、Filler、Catalyst、Stabilizing agent、Flow promoter、Sealant (barrier)、Processing aids not otherwise specified、Chemical reaction regulator、Abrasives、Insulators、Anti-caking agent、Dispersing agent、Alloys、Sizing agent、Binder、Other、Consumer Uses: Adhesion、Household Products: Information on 113 consumer products that contain Aluminum oxide in the following categories is provided:、• Auto Products、• Home Maintenance、• Inside the Home、• Landscaping、Yard、• Personal Care、• Pet Care、Methods of Manufacturing: RECOVERY OF THE ORE、BAUXITE、WHICH IS CRUSHED、GROUND、& KILN DRIED、FOLLOWED BY REACTION WITH SODIUM HYDROXIDE、FORMING SODIUM ALUMINATE、FROM WHICH ALUMINA TRIHYDRATE IS PRECIPITATED、AND CALCINED (BAYER PROCESS)、The important features exploited in the Bayer process are that boehmite、gibbsite、and diaspore can be dissolved in NaOH solutions under moderate hydrothermal conditions、the solubility of Al2O3 in NaOH is temperature dependent、most other components of the bauxite are quite inert in the process、and the silica that does dissolve subsequently forms a nearly insoluble compound. These features permit formation of a sodium aluminate solution、physical separation of the impurities、and precipitation of pure Al(OH)3 from the cooled solution.、Leaching of bauxite with caustic soda followed by precipitation of a hydrated aluminum oxide by hydrolysis and seeding of the solution. The alumina hydrate is then washed、filtered、and calcined to remove water and obtain the anhydrous oxide.、Aluminum sulfate from coal mine wastewaters is reduced to alumina.、Impurities: Sodium is the main component of the process solution and is also the largest contaminant of the product. ... Gallium is a ubiquitous component of aluminous ores. Its chemistry is similar to that of aluminum、so it accumulates in Bayer process solutions until an equilibrium is reached at about 0.2 g、L. The gallium content of Al2O3 is a linear function of the gallium concentration in the solution. ... Silicon is a component of many aluminum alloys、yet the specification for Al2O3 is less than 0.02% SiO2. ... Potassium is undesirable in the Al2O3 because it may destroy the graphite in Hall-Heroult cells by intercalation、i.e.、it diffuses between the layers of the graphite structure、thus expanding its volume. Although it is soluble in Bayer solutions、there has not been a recorded instance of K2O concentrations becoming high enough to affect the Al2O3 quality.... Iron(III)oxide (Fe2O3) as an impurity in Al2O3. ... Calcium also is a common impurity.、Formulations、Preparations: Grades: Technical、CP、chemically pure: a grade designation signifying a minimum of impurities、but not 100% purity、fibers、high purity、fused、calcined、MAIN COMPONENT OF TECHNICAL ALUMINUM OXIDE IS ALPHA-ALUMINUM OXIDE、AMT OF GAMMA-ALUMINUM OXIDE DEPENDS ON CALCINATING TEMP USED.、Whiskers、polycrystalline filaments as Fiber FP and Saffil fiber.、Continuous monofilaments、For more Formulations、Preparations (Complete) data for Aluminum oxide (6 total)、Consumption Patterns: 93% as a che。

技术档案

这个产品是什么

γ-氧化铝 是一种化工化合物，登记 CAS 号为 12737-16-5，分子式 Al2O3（分子量 101.961）。

识别信息

登记 CAS 号：12737-16-5

其分子式 Al2O3 由 2 个铝、3 个氧 组成。

别名/同义词：γ-氧化铝 · High Purity Aluminum Oxide · GAMMA-ALUMINIUM OXIDE

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PubChem 公开数据