Description
Safranin O (C.I. 50240) is a microscopy dye with CAS number 477-73-6 and empirical formula C₂₀H₁₉ClN₄. It has a molar mass of 350,85 g/mol and is widely used as a counterstain and nuclear stain in histological and microbiological preparations, delivering the characteristic red colouration essential for Gram staining and related contrast techniques. This from manufacturer Carl ROTH supplies a convenient quantity for routine staining benches, research histology and teaching laboratories. Classified among analytical chemicals and redox indicators, Safranin O supports reproducible visualisation of cellular and tissue structures under the microscope. The material is further identified by EG number 207-518-8. Laboratories rely on this defined grade when preparing staining solutions that require a consistent chemical identity and reliable tinctorial behaviour for biological microscopy, differential staining protocols and educational demonstrations of classical staining methods.
Key features
- Absorption max. (ethanol 50 %): 530-534 nm
- Loss on drying (110 °C): ≤15 %
- CAS number: 477-73-6
- Pack sizes: 10 g, 1 g, 25 g
- EG nr.: 207-518-8
- Empirical formula: C₂₀H₁₉ClN₄
- Molar mass: 350,85 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
Warning
Hazard Statements (H-Phrases)
Precautionary Statements (P-Phrases)