Aluminon

Aluminon
Names


Other names ammonium aurin-tricarboxylate; 5-[(3-carboxy-4-hydroxyphenyl)(3-carboxy-4-oxo-2,5-cyclohexadien-ylidene)methyl]-2-hydroxybenzoic acid triammonium salt
Identifiers
CAS Number	569-58-4^Y
3D model (Jmol)	Interactive image
ChemSpider	2016698^Y
ECHA InfoCard	100.008.473
PubChem	2734958
InChI InChI=1S/C22H14O9.3H3N/c23-16-4-1-10(7-13(16)20(26)27)19(11-2-5-17(24)14(8-11)21(28)29)12-3-6-18(25)15(9-12)22(30)31;;;/h1-9,23-24H,(H,26,27)(H,28,29)(H,30,31);31H3^Y Key: AIPNSHNRCQOTRI-UHFFFAOYSA-N^Y InChI=1/C22H14O9.3H3N/c23-16-4-1-10(7-13(16)20(26)27)19(11-2-5-17(24)14(8-11)21(28)29)12-3-6-18(25)15(9-12)22(30)31;;;/h1-9,23-24H,(H,26,27)(H,28,29)(H,30,31);31H3 Key: AIPNSHNRCQOTRI-UHFFFAOYAI
SMILES O=C([O-])\C1=C\C(\C=C/C1=O)=C(\c2ccc(O)c(C([O-])=O)c2)c3ccc(O)c(C([O-])=O)c3.[NH4+].[NH4+].[NH4+]
Properties
Chemical formula	C₂₂H₂₃N₃O₉
Molar mass	473.43 g/mol
Appearance	yellow-brown crystals, red in aqueous solution
Solubility in other solvents	freely soluble in H₂O
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y verify (what is ^YN ?)
Infobox references

Aluminon, the triammonium salt of aurintricarboxylic acid, is a dye commonly used to detect the presence of the aluminium ion in an aqueous solution. In addition to its use in qualitative inorganic analysis, aluminon has applications in pigment production. It forms brilliantly colored lake pigments with aluminum, chromium, iron, and beryllium.

Aluminon is prepared by reacting sodium nitrite with salicylic acid, adding formaldehyde, then treating with ammonia.^[1]

References

Salicylates

Salicylic acid Aspirin Aloxiprin Methyl salicylate Magnesium salicylate Ethyl salicylate Bismuth subsalicylate Sodium salicylate Salicylamide Salicin Benorilate Salsalate Ethenzamide Diflunisal Trolamine salicylate Homosalate Salicylmethylecgonine Octyl salicylate Aluminon Benzyl salicylate Copper aspirinate Potassium salicylate

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