Formula: Mixture of methylene blue and azure dyes in buffer CAS: Mixture EC No.: Mixture M (Molar Mass): Not applicable D (Density): ~1.00 g/cm³ mp (Melting Point): Not applicable bp (Boiling Point): Not applicable Optical Rotation: Not applicable

Composition: Polychrome methylene blue solution (methylene blue, azure A, azure B) in phosphate buffer Appearance: Deep blue to purple solution pH: 6.8 – 7.2 Staining Performance: Stains malaria parasites blue with red chromatin; differentiates parasite stages Clarity: Clear, free from precipitate Sterility: May contain preservative (e.g., sodium azide 0.1%) Packaging: Typically in dropper bottles or larger volumes Stability: 6-12 months when stored properly, protected from light