Description
Rhodamine 6G (C.I. 45160) is a pure xanthene dye for biological staining, fluorescence microscopy and related laboratory work. It is characterised by CAS number 989-38-8, EG number 213-584-9 and the empirical formula C₂₈H₃₁ClN₂O₃, with a molar mass of 479,02 g/mol. Laboratories rely on this dye for intense fluorescence and established performance in histological and cytological staining, tracer studies and selected laser-dye contexts. The pure grade supports reproducible colour development and optical response when stock solutions are prepared. Rhodamine 6G is a familiar reference among dyes for biological applications and remains useful in method development and comparative fluorescence work. Clear identification via CAS, EG number and Colour Index designation aids documentation within quality systems. Glass packaging protects the solid dye during storage and handling prior to dissolution for staining or fluorescence protocols.
This article is part of Fluorescent dyes & labels, in Dyes, stains & indicators.
Key features
- Appearance: red to brown crystal or powder
- Maximum absorption: 525-529 nm
- Loss on drying: ≤5.0 %
- CAS number: 989-38-8
- Pack sizes: 5 g, 25 g, 100 g
- EG nr.: 213-584-9
- Empirical formula: C₂₈H₃₁ClN₂O₃
- Molar mass: 479,02 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
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Precautionary Statements (P-Phrases)
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Questions about Rhodamine 6G (C.I. 45160), pure, 5 g, glass
What is this article?
Rhodamine 6G (C.I. 45160), pure, 5 g, glass is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Fluorescent dyes & labels, inside Dyes, stains & indicators, in Lab chemicals.
A fluorescent dye absorbs at one wavelength and emits at a longer one. As a label it is attached to a protein, a nucleic acid or a cell. Excitation and emission maxima, and the reactive group if it must conjugate, are the specification. The colour name does not tell you the wavelengths.
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.
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The category is Dyes, stains & indicators. The sub-category is Fluorescent dyes & labels. The catalogue is Lab chemicals.
Shelves beside this one are Microscopy stains & staining solutions and Dyes & pigments.
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