Description
Pyronin B (C.I. 45010) is an extra pure xanthene dye supplied for laboratory use, with CAS number 2150-48-3 and empirical formula C₄₂H₅₄Cl₈Fe₂N₄O₂. Its molar mass is 1042,22 g/mol. This iron-complexed pyronin derivative is well established in histological and cytological staining workflows, where controlled dye quality supports reproducible colour development in nucleic-acid and tissue preparations. The material is Extra pure grade helps laboratories maintain consistent batch performance when preparing stock solutions or staining baths. Pyronin B from manufacturer Carl ROTH fits chemical catalogues focused on dyes and staining reagents for research and routine microscopy. Handle according to standard laboratory practice for organic dyes and consult the accompanying safety documentation before use. The compact glass presentation supports organised storage and straightforward weighing for volumetric preparations in teaching, QC, and research environments that require a clearly specified pyronin reagent.
This article is part of Microscopy stains & staining solutions, in Dyes, stains & indicators.
Key features
- Appearance: dark green powder
- Maximum absorption: 545-560 nm
- CAS number: 2150-48-3
- Pack sizes: 1 g, 5 g, 10 g
- Empirical formula: C₄₂H₅₄Cl₈Fe₂N₄O₂
- Molar mass: 1042,22 g/mol
- Grade: extra pure
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about Pyronin B (C.I. 45010), extra pure, 1 g, glass
What is this article?
Pyronin B (C.I. 45010), extra pure, 1 g, glass is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Microscopy stains & staining solutions, inside Dyes, stains & indicators, in Lab chemicals.
A microscopy stain binds a structure so it can be seen: haematoxylin on nuclei, eosin on cytoplasm, Gram reagents on a bacterial wall. A ready solution and a dry dye to be dissolved are different articles. The method names the stain. A substitute dye is a different method.
A dye or a stain binds, or changes colour, so that something invisible becomes visible. An indicator changes at a pH or a redox point. A fluorescent dye absorbs one wavelength and emits another, which is how a microscope or a plate reader picks it out. The excitation and emission, or the transition interval, are the specification. The colour name on the label is not. Structures are on PubChem under IUPAC names. Methods are in the PubMed literature.
Which category should I open next?
The category is Dyes, stains & indicators. The sub-category is Microscopy stains & staining solutions. The catalogue is Lab chemicals.
Shelves beside this one are Fluorescent dyes & labels and Dyes & pigments.
What should I check before I order?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.