Aluminon: Difference between revisions

| verifiedrevid = 451147151

| ImageAlt = Skeletal formula of aluminon

| ImageFile1 = Aluminon_ions_spacefill.png

| ImageAlt1 = Space-filling models of the ions in aluminon

| ImageFile2 = Aqueous aluminon.jpg

| CASNo_Ref = {{cascite|correct|??}}

| UNII_Ref = {{fdacite|correct|FDA}}

| UNII = 23J05NR06D

| PubChem = 54729869

| EINECS = 209-319-1

| Section7 = {{Chembox Hazards

| GHSPictograms = {{GHS07}}

| GHSSignalWord = Warning

| HPhrases = {{H-phrases|315|319}}

| PPhrases = {{P-phrases|264|280|302+352|305+351+338|321|332+313|337+313|362}}

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'''Aluminon''', the tri[[ammonium]] salt of [[aurintricarboxylic acid]], is a dye often used to detect the presence of the aluminium ion in an aqueous solution. Aluminon forms a red [[complex salt]] in combination with Al³⁺.<ref name=":0" />

[[File:Lake pigment made from aluminon and ferric ions.jpg|left|thumb|Deep purple pigment in a neutral aqueous solution. Made from aluminon and ferric (Fe³⁺) ions.]]

In addition to its use in [[qualitative inorganic analysis]], aluminon has applications in pigment production. It forms brilliantly colored [[lake pigment]]s with many metals. The pigments are red in combination with [[Beryllium|Be²⁺]] and [[Gallium|Ga³⁺]]. The pigment is deep purple or reddish-brown in combination with Fe³⁺. Color of a particular pigment in acidic solutions may change: aluminon and [[Scandium|Sc³⁺]] form red pigments if the solution is acidic, but otherwise the solutions are colorless.<ref name=":0">{{Cite journal|last=Clark|first=RA|last2=Krueger|first2=GL|date=1985|title=Aluminon: its limited application as a reagent for the detection of aluminum species.|journal=Journal of Histochemistry & Cytochemistry|volume=33|issue=7|pages=729–732|doi=10.1177/33.7.3891845|pmid=3891845|issn=0022-1554|doi-access=free}}</ref>

*[[Analytical chemistry]]

*[[Colorimetry]]

{{Ammonium salts}}

[[Category:Analytical reagents]]

[[Category:3-Hydroxypropenals]]