Title: Aluminon
CAS Registry Number: 569-58-4
CAS Name: 5-[(3-Carboxy-4-hydroxyphenyl)(3-carboxy-4-oxo-2,5-cylohexadien-1-ylidene)methyl]-2-hydroxybenzoic acid triammonium salt
Additional Names: 3-[bis(3-carboxy-4-hydroxyphenyl)methylene]-6-oxo-1,4-cyclohexadiene-1-carboxylic acid triammonium salt; ammonium salt of aurintricarboxylic acid
Trademarks: Lysofon (Lafon)
Molecular Formula: C22H23N3O9
Molecular Weight: 473.43
Percent Composition: C 55.81%, H 4.90%, N 8.88%, O 30.42%
Literature References: Prepd by reacting sodium nitrite with salicylic acid and adding formaldehyde, then treating with ammonia: G. B. Heisig, W. M. Lauer, Org. Synth. coll. vol. I, 54 (2nd ed., 1941).
Properties: Yellowish-brown, glassy powder. Freely sol in water.
Use: Forms brilliantly colored lakes with aluminum, chromium, iron, beryllium. Generally used for the detection and colorimetric estimation of aluminum in water, foods, tissues. Cf. Scherrer, Mogerman, J. Res. Natl. Bur. Stand. 21, 105 (1938).
Therap-Cat: Pharyngeal aerosol spray. |