Formula: C₂₂H₂₃N₃O₉ IUPAC Name: Ammonium aurintricarboxylate CAS: 569-58-4 EC No.: 209-321-2 M (Molar Mass): 473.44 g/mol Appearance: Brownish-red powder

Assay (Spectrophotometric): ≥ 98.0%. Appearance: Brownish-red powder. Identification: Forms red lake with aluminum ions. Solubility: Soluble in water (red solution), slightly soluble in ethanol. pH (1% solution): 4.0-6.0. Loss on Drying: ≤ 0.5%. Residue on Ignition: ≤ 0.1%. Heavy Metals (as Pb): ≤ 20 ppm. Sensitivity: Detects 0.1 ppm aluminum. Stability: Stable in dry form, solution stable for 1 week. Reagent Solution: 0.1% in water.