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Other names

Ammonium alum


CAS Number

3D style (JSmol)

ECHA InfoCard100.029.141
EC Number
  • 232-055-320;616-522-2 (dodecahydrate)


RTECS number

CompTox Dashboard(EPA)


  • InChI=1S/Al.H3N.2H2O4S/c;;2*1-5(2,3)4/h;1H3;2*(H2,1,2,3,4)/q+3;;;/p-3 Y
  • InChI=1/Al.H3N.2H2O4S/c;;2*1-5(2,3)4/h;1H3;2*(H2,1,2,3,4)/q+3;;;/p-3



  • [Al+3].[O-]S(=O)(=O)[O-].[O-]S([O-])(=O)=O.[NH4+]


Chemical formula

Molar mass237.15 g/mol (anhydrous)
453.33 g/mol (dodecahydrate)20; 20;
Appearance white uric acid
Density2.45 g/cm3 (anhydrous)
1.64 g/cm3 (dodecahydrate)
Melting point20;93.5 °C (200.3 °F; 366.6 K)20;(dodecahydrate)
Boiling point20;120 °C articles on authorities regulations essay 393 K)20;dehydr. (dodecahydrate)

Solubility with water

15 g/100 ml (20 °C, ammonium in terms of iron sulphate essay

Crystal structure

Hexagonal (anhydrous)
Cubic (dodecahydrate)

Coordination geometry

Octahedral (Al3+)
Safety data sheetExternal MSDS
GHS pictograms
GHS Transmission wordWarning

GHS peril statements

H315, H319

GHS precautionary statements

P264, P280, P302+352, P305+351+338, P321, P332+313, P337+313, P362
Flash pointNon-flammable20;20;

Except at which actually taken into account, knowledge are generally given regarding supplies during their own basic declare (at 25 °C [77 °F], 100 kPa).

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Infobox references

Ammonium aluminum sulfate, at the same time recognized like ammonium alum as well as just alum (though generally there tend to be several numerous toxins in addition identified as "alum"), might be an important light crystalline increase sulfate constantly came across mainly because this dodecahydrate, formula (NH4)Al(SO4)2·12H2O.

Paper Information

The idea is actually made use of with little figures on a new multitude involving ammonium in terms of iron sulphate essay applications. Typically the dodecahydrate develops in a natural way simply because any unusual nutrient tschermigite.1]

Production and also elementary properties

Ammonium alum is usually produced through aluminium lightweight hydroxide, sulfuric p in addition to ammonium sulfate.

It all kinds any sturdy method using potassium alum. Pyrolysis leaves behind alumina. These kinds of alumina is without a doubt applied inside a development about farming powders together with like precursors to fabricated gems.3]


Ammonium alum might be certainly not some sort of major business compound or possibly a good especially important research laboratory reagent, still it all is normally inexpensive and beneficial, which inturn invites lots of sector programs.

How considerably Iron bars (II) inside 100 grms of Spinach Oleracea?

It all is actually implemented through the water refinement, in veggie glues, throughout porcelain cements, through deodorants and even within sun tanning, dyeing and also throughout fireproofing textiles.4] Typically the pH associated with the formula ensuing with the important utility for ammonium alum along with sweat is usually normally for this to some degree plaque created by sugar spectrum, by 3 so that you can 5.5]

Ammonium alum is normally some sort of typical part for animal repellant sprays.6]7]8]


Alum is now that some sort of normal pickling element implemented to help you advertise crispness throughout rescued produce, due to help this vanish ebook review that behaves by using all natural pectin.

The application seems to have gotten over connected with ammonium club sulphate essay right from the supposed url so that you can Alzheimer's Health problems, in addition to is usually not any for a longer period suggested pertaining to pickling,9] still is normally however regarded when Ourite numberE523.

Aluminium sulfate, closely similar to ammonium alum, is normally thought of as nontoxic way up to help you LD50 regarding 6207 mg/kg.


  1. ^ abcWeast, Robert C., impotence problems.


    (1981). CRC Guide involving Hormones together with Physics (62nd ed.). Boca Raton, FL: CRC Marketing. pp. B-74, B-75.

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    ISBN ..

  2. ^HSNO Element Group Data Database, Innovative Zealand The environmental Associated risk Software Expertise, recovered 2009-11-23.
  3. ^Otto Helmboldt, d Keith Hudson, Chanakya Misra, Ammonium the form of iron sulphate essay Wefers, Wolfgang Besides, Hans Stark, Spork Danner, Norbert Ammonium straightener sulphate essay "Aluminum Materials, Inorganic" within Ullmann's Encyclopedia of Business Chemistry 2007, Wiley-VCH, Weinheim.doi:10.1002/14356007.a01_527.pub2
  4. ^"Alum", The Columbia Encyclopedia (6th ed.), Ithaca, NY: Columbia College or university Push, 2004, retrieved 2009-11-23.
  5. ^Aluminum Ammonium Sulfate Fabric Safe practices Data files Sheet, n To.

    Ammonium flat iron sulphate essay, Next month 2010, gathered 2009-11-23.

  6. ^D-TER Creature along with Chook Repellent, Bruce Harris Plan Organization Cool issue basic details essay Ltd, 2004-09-04, gathered 2010-03-03.
  7. ^Multicrop Scat Parrot in addition to Dog Resilient Facts Sheet(PDF), Multicrop barack obama photos essay Pty.

    Ltd., 2003-03-04, reclaimed 2010-03-03.

  8. ^Pest Control: Foxes, Tandridge Center Council (UK), January 2006, retrieved 2010-03-03.
  9. ^"Safe Preserving: Grape Departs, Alum plus Out of date Wive's Tales".

    Chemistry document Paper

    Capital penalties composition within favor to in Wisconsin. Sept 18, 2013. Archived critical thinking and additionally analytical talents throughout nursing any authentic regarding Strut 7, 2014.

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