Henan "Snow" brand 98.5% alumina

Natural Balance Henan Great Wall Aluminium Alumina Alumina, also known as aluminum oxide, molecular weight 102, commonly referred to as "oxy", is a white amorphous powder, commonly known as bauxite, said: Chinese Name: aluminum oxide, aluminum oxide; Synonyms: Aluminum oxide; commonly known as: corundum chemical formula: Al2O3 Molecular Weight: 101.96 Storage: sealed dry preservation. SCRC100009 Dissolved in water,% ≤0.5 silicate (SiO3) qualified alkali and alkaline earth metals,% ≤0.50 heavy metals (Pb),% ≤0.005 Chloride (Cl),% ≤0.01 sulphate (SO4),% ≤0.05 loss on ignition,% ≤5.0 iron (Fe),% ≤0.01 Alumina is the raw material bauxite chemically treated to remove oxides of silicon, iron, titanium, and prepared, it is a high-purity silica aluminum raw material, Al2O3 content is generally above 99%. Mineral phase is composed of 40% to 76% of γ- Al2O3 and 24% to 60% of α- Al2O3 composition. γ- Al2O3 at 950 ~ 1200 ℃ can be converted to α- Al2O3 (corundum), while a significant volume shrinkage occurs. Physical characteristics: There are 325 aluminum mesh, 800 mesh, 1250, 5,000 heads of four specifications as well as a white powdery solid alumina balls 1-3mm, 3-5mm properties of white or red rods... The proportion of 3.5 to 3.9. Melting point 2.045 ℃. Boiling point 2.980 ℃. Surface area of ??200 to 400 m 2 / g. Specific heat 0.21 to 0.4 cal / g? ℃. Moist heat 25 to 30 cal / g. It is an amphoteric oxide, chemically stable, insoluble in water, slightly soluble in alkalis and acids. Uses: used as analytical reagents. Dehydrated organic solvent. Adsorbent. Organic catalysts. Abrasive. Polishing agent.