- Synonyms: Mixture of Azure B and Methylene blue in equal amounts - CAS [37247-10-2] - Solub. in water: (20 ºC): ~ 100 g/l - GHS-signal word: Warning - GHS-H sentences: H302 - GHS-P sentences: P264 - P270 - P301+P312 - P330 - P501a - Tariff number: 3204 13 00 90 - Applications: microscopy. SPECIFICATIONS Absorption maximum l max (in methanol)645 - 650 nm 0,0005 % methanol, on dried sample): 1850 - 2100 related substances (TLC): passes test loss on drying (110 ºC): max. 15 % suitability for microscopy: passes test