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Aluminum Hydroxide Powder
Al(OH)3, Hydrated Alumina, 65%
Product Applications:
Aluminum Hydroxide is used extensively in the production of aluminum chemicals, most commonly:
* alum
* zeolites
* aluminum chlorohydrates
* sodium aluminate
* anhydrous aluminum fluoride
* sodium aluminum sulfate
* aluminum phosphate
* alumina-based catalysts
* poly aluminum sodium silicate
Aluminum Hydroxide is widely used as flame retardant and smoke-suppressant fillers in carpet backing, rubber and polymer systems, including thermosets, thermoplastics and elastomers. Al(OH)3 is also useful in the manufacture of crystal, glass, refractories and in vitreous enamel, frits and glazing mixtures.
Physical Properties:
Brightness 72 - 76
Specific Gravity 2.42
Mohs Hardness 2.5 - 3.5
Refractive Index 1.57
Surface Area 0.1 m/gm
Loss on Ignition 34.7% (110 – 1100oC)
Loose Density 66 - 76 lbs/ft3
Lbs/solid gallon 20.16
Retained on 100 mesh 3 - 5%
Retained on 200 mesh 70 - 75%
Retained on 325 mesh 90 - 95%
Typical Analysis:
Aluminum Oxide Al2O3 65.0%
Ferric Oxide Fe2O3 0.005 - 0.010%
Silica SiO2 0.005 - 0.010%
Sodium Oxide (total) Na2O 0.12 - 0.22%
Sodium Oxide (soluble) Na2O 0.01 - 0.06%
Moisture (110oC) 0.02 - 0.08%
Caustic Insoluble 0.01 - 0.20
Acid Insoluble 0.05 - 0.40