Specification of Alumina Tri Hydrate

Chemical Analysis :

Al2O3

65.5%

H2O

35.0%

Na2O

0.25 %

CaO                                                   

0.01%

 SiO2

0.012 %

 Fe2O3

0.010 %

Physical Properties

Free moisture at 100°c

 0.3 %

 Loss on Ignition

33.0 %

Specific  Gravity.  gm/cu cm

2.42

Hardness

3.5

Colour Reflectaure

92 –94(Compared to MgO taken as 100)

 Refractive Index

1.6

 Grades 

325 / 400 / 600 / 800

Particle Size Analysis

 

325

400

600

800

Median Particle Size (d50) mm

45.0

37.0

25.0

15.0

Passing thru 325 mesh

97%

99%

99.5%

99.9%