Toluidine blue (ZnCl2) is a basic thiazine dye supplied as the zinc chloride double salt, commonly used as a biological stain for microscopy and biochemical assays. It preferentially stains acidic tissue components such as nucleic acids, making it useful for histology, cytology, and diagnostic staining.
- Basic thiazine dye for staining nucleic acids and acidic tissue components.
- Supplied as the zinc chloride double salt suitable for staining protocols.
- Commonly used in microscopy, histology, and cytology applications.
- Assay purity reported as 84.5% (manufacturer data).
- Supplied in laboratory-scale quantities for research use.