1.Chemical formula: Al₂O₃•nH₂O n< 1
2.Properties and uses:
     Aluminum oxide micro ball has two crystalline phase,one type is γ-acitve aluminum oxide micro sphere,another type is γ-aluminum oxide micro sphere.
Appearances of the two type micro sphere are all white.The γ-aluminum oxide micro sphere is alightly soluble in acid and alkali,insoluble in water.The γ-aluminum oxide micro sphere can transfer into α-aluminum oxide through calcined at 1200-1500°C.This product is widely used in decolor purification of organic liquid.
3.WHA-108 γ-active aluminum oxide micro sphere physico-chemical Indexes:

Particle Size 50-100 Mesh Bulk Density    g/cm3 ≥0.75 Specific area surface   m2/g ≥300 Pore Volume cm3/g ≥0.38 Na2O: % ≤1.0