Aluminum hydroxide

IUPAC Name: Aluminum trihydrate
Synonyms of Aluminum hydroxide (CAS NO.21645-51-2): Alhydrogel ; Alugelibye ; Aluminum oxide trihydrate ; Aluminum(III) hydroxide ; Alusal ; Amorphous alumina ; Boehmite ; Trihydrated alumina ; Trihydroxyaluminum
CAS NO: 21645-51-2
Molecular Formula: Al(OH)₃
Molecular Weight: 78.00
Molecular Structure:
EINECS: 244-492-7
H bond acceptors: 3
H bond donors: 3
Freely Rotating Bonds: 3
Polar Surface Area: 60.69 Å²
Melting Point: 300°C
Density: 2.40
Water Solubility: insoluble
Stability: Stable. Incompatible with strong bases.
Appearance: white amorphous powder
SMILES: O[Al](O)O
InChI: InChI=1/Al.3H2O/h;3*1H2/q+3;;;/p-3/rAlH3O3/c2-1(3)4/h2-4H
InChIKey: WNROFYMDJYEPJX-AHUHMHQZAT
Std. InChI: InChI=1S/Al.3H2O/h;3*1H2/q+3;;;/p-3
Std. InChIKey: WNROFYMDJYEPJX-UHFFFAOYSA-K
Product Categories of Aluminum hydroxide (CAS NO.21645-51-2): PHARMACEUTICALS;INORGANIC & ORGANIC CHEMICALS;Inorganics;Essential
Chemicals;Reagent Grade;Routine Reagents

 Uses of Aluminum hydroxide (CAS NO.21645-51-2):
1. The main use of Aluminium hydroxide is as a feedstock for the manufacture of other aluminium compounds: specialty calcined aluminas, aluminium supfate, polyaluminium chloride, aluminium chloride, zeolites, sodium aluminate, activated alumina, aluminium nitrate.

2. It is also found that Aluminium hydroxideuse can be used as a fire retardant filler for polymer applications. Moreover it is vey effective as a smoke suppressant in a wide range of polymers, most especially in polyesters, acrylics, ethylene vinyl acetate, epoxies, PVC, rubber.

 As a matter of fact the Aluminium hydroxide commercially is manufactured by the Bayer Process which involves dissolving bauxite in sodium hydroxide as the first step.

Reported in EPA TSCA Inventory.

Hazard Codes: Xi
Risk Statements: 36
R36: Irritating to eyes.
Safety Statements: 26-36
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36: Wear suitable protective clothing.
RTECS: BD0940000
HS Code: 28183000

ACGIH TLV: TWA 2 mg(Al)/m³
DFG MAK: 1.5 mg/m³

General Information: As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear.
Extinguishing Media: Use water spray, dry chemical, carbon dioxide, or chemical foam. 
Handling: Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.
Storage: Store Aluminum hydroxide (CAS NO.21645-51-2) in a cool, dry place. Store in a tightly closed container.