Aluminon

• Aurin tricarboxylic acid ammonium salt
• 4,4 '- Dihydroxyfuchson -3, 3', 3'' -tricarboxylic acid ammonium salt

Dark red crystalline solid

Fixed

Decomposition: 220-225 ° C

800 g · l -1 ( 20 ° C)

Attention

9000 mg · kg -1 ( LD50, rat, oral)

Template: Infobox chemical / molecular formula search available

Aluminon is the ammonium salt of aurintricarboxylic acid and thus belongs to the triphenylmethane dyes. The name of the deep red substance is derived from its use for aluminum detection.

Use

Aluminon is used primarily for the detection of aluminum. It forms in combination with aluminum in acetic acid solution a sparingly soluble red color paint that often fails in red flakes after a few minutes. The precipitate dissolves in contrast to the other metals, not after the addition of ammoniacal ammonium carbonate solution ( ( NH4) 2CO3 ).