Aluminum oxide suppliers

Aluminum oxide

CAS:: 1344-28-1

MF:: Al2O3

MW:: 101.96

SecurityInformation

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

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.

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Shaanxi Haibo Biotechnology Co., Ltd