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corundum

corundum Suppliers list
Company Name: Chemson Industrial (Shanghai) Co., Ltd.
Tel: 86-21-65208861-ext8007
Email: sales1@chemson.com.cn
Products Intro: Product Name:Alumina; Aluminum Oxide
CAS:11092-32-3
Purity:99.999%; 99.99%; 99.9% Package:25KG;22.6USD
Company Name: Henan DaKen Chemical CO.,LTD.
Tel: +86-371-55531817
Email: info@dakenchem.com
Products Intro: Product Name:ALUMINUM OXIDE
CAS:11092-32-3
Purity:99% Package:100g,500g,1KG,10KG,100KG
Company Name: Henan Tianfu Chemical Co.,Ltd.
Tel: 0371-55170693
Email: info@tianfuchem.com
Products Intro: CAS:11092-32-3
Purity:99% Package:500G;1KG;5KG;25KG
Company Name: Mainchem Co., Ltd.
Tel: +86-0592-6210733
Email: sales@mainchem.com
Products Intro: Product Name:ALUMINUM OXIDE
CAS:11092-32-3
Company Name: Hefei TNJ Chemical Industry Co.,Ltd.
Tel: 86-0551-65418684 18949823763
Email: info@tnjchem.com
Products Intro: Product Name:ALUMINUM OXIDE
CAS:11092-32-3
Purity:99.9% Package:1KG;5USD

Lastest Price from corundum manufacturers

  • Alumina; Aluminum Oxide
  • US $22.60 / KG
  • 2018-04-25
  • CAS:11092-32-3
  • Min. Order: 25KG
  • Purity: 99.999%; 99.99%; 99.9%
  • Supply Ability: 1000tons
corundum Basic information
Product Name:corundum
Synonyms:CORUNDUM;Alummum oxide;Single-pass AAO;V type AAO;Double-pass AAO;Aluminum oxide, Single crystal, 25.4mm dia x 0.5mm thick, random orientation;ALUMINIUM OXIDE BASIC;ALUMINIUM OXIDE, BROCKMANN TYPE I
CAS:11092-32-3
MF:Al2O3
MW:101.96
EINECS:215-691-6
Product Categories:Industrial/Fine Chemicals
Mol File:11092-32-3.mol
corundum Structure
corundum Chemical Properties
Melting point 2040 °C(lit.)
Boiling point 2977 °C
density 1.06 g/mL at 25 °C
form powder
Water Solubility Insoluble in water.
CAS DataBase Reference11092-32-3(CAS DataBase Reference)
Safety Information
Hazard Codes Xi
Risk Statements 36/37/38
Safety Statements 26
RIDADR UN1263
WGK Germany -
RTECS BD1200000
3
TSCA Yes
HazardClass 3
PackingGroup III
MSDS Information
ProviderLanguage
ACROS English
SigmaAldrich English
ALFA English
corundum Usage And Synthesis
Agricultural UsesAlumina is a white or colorless oxide occurring in two forms, a-alumina and γ-alumina. The γ-alumina turns into a stable a form on heating. Naturally occurring alumina is called corundum or emery.
The gemstones ruby and sapphire are aluminum oxides colored by minute traces of chromium and cobalt, respectively. The highly protective film of oxide formed on the surface of aluminum is yet another structural variation, a defective form of rock salt.
Pure aluminum oxide is obtained by dissolving bauxite ore in sodium hydroxide solution to eliminate insoluble impurities. Seeding the solution with material from a previous batch precipitates the hydrated oxide, which on further heating gives γ-alumina at 500 to 800°C and pure a-alumina at 1150 to 1200°C. The latter is one of the hardest materials known. It is used widely as an abrasive substance in both its natural and synthetic forms. Its refractory nature makes alumina bricks an ideal material for furnace linings and high temperature cements.
Alumina occurs in phosphate rocks along with iron and other impurities in small percentages. Alumina and iron in phosphate rock make the superphosphate moist and sticky. The maximum acceptable alumina and iron in the rock for farming is 3 to 4 %
corundum Preparation Products And Raw materials
Preparation ProductsTitanium dioxide-->Aluminium potassium sulfate dodecahydrate
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