Aluminium nitrate 3809994 224114296 2008-07-07T11:13:39Z Rifleman 82 1255637 /* Synthesis */ tweak format {{Chembox new | Name = Aluminium nitrate | ImageFile = Aluminium nitrate.png <!-- | ImageSize = 200px --> | ImageName = | IUPACName = Aluminium nitrate | Section1 = {{Chembox Identifiers | CASOther = 13473-90-0 (anhydrous)<br /> 7784-27-2 (nonahydrate) | RTECS = }} | Section2 = {{Chembox Properties | Formula = Al(NO<sub>3</sub>)<sub>3</sub> | MolarMass = 212.9962 g/mol | Appearance = colorless to white solid, [[hygroscopic]] | Density = >1 g/cm³ ? | Solubility = 60.0 g/100 ml (0°C) | MeltingPt = 73°C | BoilingPt = Decomposes at 135°C | pKa = | pKb = | Viscosity = ? [[Poise|cP]] at ?°C }} | Section7 = {{Chembox Hazards | ExternalMSDS = [http://physchem.ox.ac.uk/MSDS/AL/aluminium_nitrate_nonahydrate.html External MSDS] | MainHazards = | FlashPt = ?°C | RPhrases = | SPhrases = }} }} '''Aluminium nitrate''' is a salt of [[aluminium]] and [[nitric acid]], existing normally as a crystalline hydrate, most commonly as aluminium nitrate nonahydrate, Al(NO<sub>3</sub>)<sub>3</sub>·9H<sub>2</sub>O, with a molecular formula weight of 375.13. ==Synthesis== Aluminium nitrate can be easily prepared by the reaction of aluminum hydroxide with nitric acid: :Al(OH)<sub>3</sub> + 3HNO<sub>3</sub> -> Al(NO<sub>3</sub>)<sub>3</sub> + 3H<sub>2</sub>O The synthesis from aluminium metal has many problems since aluminium is not attacked by nitric acid because of its protective oxide layer. The process involves an initial basic attack with KOH, followed by partial neutralization with nitric acid to precipitate the hydroxide. The hydroxide is then filtered and washed thoroughly to remove soluble potassium nitrate. After this, the filtered aluminium hydroxide is reacted with excess nitric acid. The crystals are very deliquescent and must be stored in dry conditions. ==Uses== Aluminium nitrate is a strong oxidizing agent. It is used in tanning leather, antiperspirants, corrosion inhibitors, extraction of uranium, petroleum refining, and as a nitrating agent. It is used in the laboratory and classroom such as in the reaction Al(NO<sub>3</sub>)<sub>3</sub> + 3NaOH --> Al(OH)<sub>3</sub> + 3NaNO<sub>3</sub> ==References== {{Unreferenced|date =September 2007}} {{reflist}} ==External links== * http://www.eol.ucar.edu/~beaton/ChemWeb/worksheets/rxnws.html [[Category:Aluminium compounds]] [[Category:Nitrates]] [[Category:Deliquescent substances]] {{inorganic-compound-stub}} [[ar:نترات ألومنيوم]] [[de:Aluminiumnitrat]] [[fr:nitrate d'aluminium]] [[it:Nitrato di alluminio]] [[zh:硝酸铝]]