Aluminium Hydroxide Properties, Molecular Formula, Applications - WorldOfChemicals

Aluminium Hydroxide Properties

Aluminium Hydroxide



Aluminium hydroxide sometimes erroneously called hydrate of alumina, is found in nature as the mineral gibbsite and its three, much more rare forms, polymorphs: bayerite, doyleite and nordstrandite. The major uses of aluminium hydroxide is as a feedstock for the manufacture of other aluminium compounds. Aluminium hydroxide also finds use as a fire retardant filler for polymer applications in a similar way to magnesium hydroxide and hydromagnesite. In addition to behaving as a fire retardant, it is very effective as a smoke suppressant in a wide range of polymers, most especially in polyesters, acrylics, ethylene vinyl acetate, epoxies, PVC, rubber.

Chemical Properties

Acidity >7
Appearance White Amorphous Powder
CAS Number 21645-51-2
Density 2.42 g/cm3
EINECS Number 244-492-7
HS Code 281830000
IUPAC Name Aluminium Hydroxide
LR Assay 76.5-90.0%
Lab Grade LR
Melting Point 300 °C
Molar Mass 78.00 g/mol
Molecular Formula Al(OH)3
NFPA 704 H-1,F-0,R-0,C-NA
RTECS Number BD0940000
Related Compounds Sodium oxide;
Aluminium oxide hydroxide
Solubility 0.0001 g/100 ml
Synonyms Aluminium(III) Hydroxide;Hydrated Alumina;Orthoaluminic Acid;Aluminium Trihydrade;Aluminum Trihydrate