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High Purity ultrafine Alumina

High Purity ultrafine Alumina
Click to see the original picture 		Product Name:High Purity ultrafine Alumina
Place of Origin:Peoples Republic of China
Post Date:November 10, 2009
Edit Date:November 10, 2009 		Company Name :
Detailed Product Description:
  • Place of Origin: Hebei China (Mainland)

AL2O3 99.5%; K:25*10-4;Si:1*10-3; Mg:5*10-4;Cu:5*10-4;
Fe:1*10-3; Na 2*10-3; Mn:5*10-4; Ca: 5*10-4; Ti:5*10-4; Cr: 5*10-4

mineral: alumina oxide
 
Descripttion:
The powder appears in white and shapeless with no flavor or taste. It absorbs moisture easily but does not deliquesce. It can be dissolved in  sulphuric acid as well as in alkali coluttion slowly forming hydroxid but never in water or mineral acid.
Specifications:Puritty AL2O3>99.98%
Particle sige 0.3~0.6um
Loose Density Type Y0.14~0.17g/cm3 Type a 0.27~0.50g/cm3
Specific surface Area 3-28 m2/g
Glowing Decrement type y≤3% Type a≤0.5%
Impurity Capacity≤%
K:25×10-4
Si:1×10-3
Mg:5×10-4
CU:5×10-4
Fe:1×10-3
Na2×10-3
Mn:5×10-4
Ca:5×10-4
Ti:5×10-4
Cr:5×10-4
Transmittance
When used for making high pressure sodium Lamps≥96%

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