Specifications | |
---|---|
Identity (UV/VIS-Spectrum) | passes test |
Appearance | White to yellowish white powder |
Clarity of the alkoholic solution (10 g/l ethanol) | passes test |
Absorption maximum λmax. (buffer pH 9.8) | 551 - 554 nm |
Spec. Absorptivity A 1%/1cm (λmax; 0.01 g/l; buffer pH 9.8; calculated on dried substance) | 700 - 750 |
Transition range | pH 8.2 - pH 9.8 almost colorless - red-violet |
Transition range (according to ACS) | passes test |
Transition interval (according Reag. Ph. Eur.) | passes test |
Loss on drying (105 °C) | ≤ 1 % |