Specifications :

• Dye content (gravimetrically) : ≥ 80 %
• Identity
  – sodium : passes test
  – UV/VIS-Spectrum : passes test
• Absorption maximum λ max (water) : 524 – 527 nm
• Spec. Absorptivity A 1%/1cm (λmax; 0.005 g/l; water) : 930 – 1170
• TLC-Test : passes test
• Loss on drying (110 °C) : ≤ 10 %
• Suitability for microscopy : passes test