Analysis Note

Identity (UV/VIS-Spectrum): passes testAppearance: Red to red-violet powder, eventually with granular parts.Clarity of solution (1 g/l; ethanol): passes testMelting point (capillary method, temperatur measerment in the heating block): 179 - 182 °CTransition range: pH 4.4 - pH 6.0 Red - yellowAbsorption maximum (buffer pH 4.5): 523 - 526 nmAbsorption maximum (buffer pH 6.2): 427 - 437 nmSpec. Absorptivity A 1%/1cm (λ_max; 0.005 g/l; buffer pH 4.5; calculated on anhydrous substance): 1350 - 1500Spec. Absorptivity A 1%/1cm (λ_max; 0.005 g/l; buffer pH 6.2; calculated on anhydrous substance): 700 - 800Transition range (according to ACS): passes testLoss on drying (110 °C): ≤ 5 %

Packaging

25, 100 g in Glass bottle