Specifications :

• Identity (UV/VIS-Spectrum) : passes test
• Appearance of solution (0.1 g/l; ethanol) : passes test
• Absorption maximum λmax. (Ethanol) : 569 – 572 nm
• Spec. Absorptivity A 1%/1cm (λmax.; 0.025 g/l; ethanol; calc. on water free substance) : ≥ 250
• Water (according to Karl Fischer) : ≤ 9 %
• Suitability as indicator (for metal titration) : passes test