Description
Pyronin G (C.I. 45005) is an extra pure xanthene dye intended for biological staining and related laboratory applications. It is specified by CAS number 92-32-0, empirical formula C₁₇H₁₉ClN₂O and molar mass 302,8 g/mol. The product is As a Colour Index–referenced dye for biological applications, it supports protocols that require a defined pyronin grade with documented purity. Identity and physical data from manufacturer Carl ROTH facilitate consistent ordering and laboratory documentation. The extra pure quality and small pack format suit research, teaching and routine staining where controlled dye input is preferred. Users should follow standard chemical handling procedures and consult the safety data before dissolution or application to biological specimens.
This article is part of Microscopy stains & staining solutions, in Dyes, stains & indicators.
Key features
- Appearance: green to black powder
- Dye content: ≥50 %
- Absorption max. (50 % C2H5OH): 546-551 nm
- Loss on drying (110 °C): ≤15 %
- CAS number: 92-32-0
- Pack sizes: 1 g, 5 g, 10 g
- EG nr.: 202-147-8
- Empirical formula: C₁₇H₁₉ClN₂O
- Molar mass: 302,8 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about Pyronin G (C.I. 45005), extra pure, 1 g, glass
What is this article?
Pyronin G (C.I. 45005), 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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Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.