Description
Auramine O (C.I. 41000) is a fluorescent diarylmethane dye for microscopy, supplied with CAS number 2465-27-2, EG number 219-567-2, empirical formula C₁₇H₂₂ClN₃ and a molar mass of 303,84 g/mol. It is employed in fluorescence microscopy staining procedures, including acid-fast and related diagnostic staining schemes where bright yellow-green fluorescence under appropriate excitation is required. The product is This dye from manufacturer Carl ROTH is classified under UN number 3077 and belongs to dyes for biological applications. Documented molecular data support method standardisation and solution preparation. Auramine O remains a standard choice when fluorescence contrast and reliable dye identity are needed for microscopic examination of biological specimens.
This article is part of Microscopy stains & staining solutions, in Dyes, stains & indicators.
Key features
- Maximum absorption: 430-440 nm
- CAS number: 2465-27-2
- Pack sizes: 25 g, 50 g
- EG nr.: 219-567-2
- Empirical formula: C₁₇H₂₂ClN₃
- Molar mass: 303,84 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
WarningHazard Statements (H-Phrases)
Precautionary Statements (P-Phrases)
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Questions about Auramine O (C.I. 41000), for microscopy, 25 g, glass
What is this article?
Auramine O (C.I. 41000), for microscopy, 25 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.