Aluminum oxide suppliers
Aluminum oxide
- CAS:
- 1344-28-1
- MF:
- Al2O3
- MW:
- 101.96
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Properties
- Melting point:
- 2040 °C(lit.)
- Boiling point:
- 2980°C
- Density
- 3.97
- bulk density
- 950-1100g/L
- vapor pressure
- 17 mm Hg ( 20 °C)
- refractive index
- 1.765
- Flash point:
- 2980°C
- storage temp.
- Sealed in dry,Room Temperature
- solubility
- Miscible with ethanol.
- form
- powder
- color
- White to pink
- Specific Gravity
- 3.97
- Odor
- Odorless
- PH Range
- 3.5 - 4.5
- PH
- 7.0±0.5 ( in H2O)
- Water Solubility
- INSOLUBLE
- semiconductor properties
- <0001>
- Crystal Structure
- Trigonal
- crystal system
- Three sides
- Merck
- 14,356
- Space group
- R3c
- Lattice constant
a/nm b/nm c/nm α/o β/o γ/o V/nm3 0.47589 0.47589 1.2991 90 90 120 0.2548
- Exposure limits
- ACGIH: TWA 1 mg/m3
OSHA: TWA 15 mg/m3; TWA 5 mg/m3
- Dielectric constant
- 4.5（Ambient）
- InChIKey
- PNEYBMLMFCGWSK-UHFFFAOYSA-N
- CAS DataBase Reference
- 1344-28-1(CAS DataBase Reference)
- NIST Chemistry Reference
- Aluminum oxide(1344-28-1)
- EPA Substance Registry System
- Alumina (1344-28-1)
Safety Information
- Symbol(GHS)
GHS02,GHS07
- Signal word
- Danger
- Hazard statements
- H225-H319-H336
- Precautionary statements
- P210-P261-P305+P351+P338
- Hazard Codes
- Xi,F
- Risk Statements
- 36/37/38-67-36/38-11-36
- Safety Statements
- 26-24/25-16-7-36
- WGK Germany
- -
- RTECS
- BD1200000
- F
- 3
- TSCA
- Yes
- HazardClass
- 8
- HS Code
- 28181010
- Hazardous Substances Data
- 1344-28-1(Hazardous Substances Data)
- Toxicity
- Chronic inhalation of Al2O3 dusts may cause lung damage.
Use
Pure Aluminum oxide, needed to produce aluminum by the Hall process, is made by the Bayer process. The starting material is bauxite (Al2O3 nH2O). The ore contains impurities, such as, SiO2, Fe2O3, TiO2, and Na2O. Most impurities are removed following treatment with caustic soda solution. Bauxite is dissolved in NaOH solution. Silica, iron oxides and other impurities are filtered out of the solution. CO2 is then bubbled through this solution. This precipitates areheated to remove water and produce Al2O3. These impurities are removed. Calcinations of bauxite produce Aluminum oxide of abrasive and refractory grades. Activated Aluminum oxide of amorphous type, as well as the transition Aluminum oxides of , , , and forms, are obtained from various aluminum hydroxides, such as, - and -trihydrates, -monohydrate and Aluminum oxide gel. Such chemicals arealsoobtained from bauxite by the Bayer process.
2 supplier list of "Aluminum oxide"
- Product Name:Aluminum oxide
- Company Type: Trader
- Country/Region: BELGIUM
- Product Name:Aluminum oxide
- Products Intro:Purity: 99% | Package: 5KG
- Company Type: Trader
- Country/Region: BELGIUM