Aluminium Hydroxide - Hydrated Alumina - Ceramics, Pottery, Flame retardant

ALUMINIUM HYDROXIDE

TECHNICAL GRADE

• Formula: Al(OH)₃
• UN No. N/R
• CAS No. 21645-51-2
• Appearance: white powder
• % purity:
• Other names:Alumini­um(3+) trioxidanide, Aluminic acid, Aluminic hydroxide, Aluminium(III) hydroxide, Aluminum hydroxide,Hydrated alumina, Orthoaluminic acid
• Molecular formula: Al₂O₃.3H₂O
• Molar mass: 78 g/mol
• Density: 2.42 g/cm³
• Melting point: 300 C

 

Uses For Aluminium Hydroxide

• For the manufacture of aluminium and aluminium compounds
• As a fire retardant
• Ceramics and pottery

In ceramics it is used primarily to promote 'stiffness' of glazes (6-10% of silica content). Increasing firing temperature and resistance to chemical attack. In larger quantities (15% of glaze) however, produces opaque and matt effects. Also used on kiln shelves as protection against glaze sticking. 

 

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Click here to view Specification Sheet