Description
Sudan Blue II (C.I. 61554) is a pure laboratory dye with CAS number 17354-14-2 and empirical formula C₂₂H₂₆N₂O₂. It has a molar mass of 350,45 g/mol and a density of 1,213 g/cm³, This solvent-soluble blue colourant from manufacturer Carl ROTH carries EG number 241-379-4 and supports reproducible preparation of dye solutions, stock standards, and staining baths where the C.I. 61554 identity is specified. Typical laboratory uses include lipophilic phase colouration, thin-layer visualisation, and comparative colour work that relies on a defined pure grade of Sudan Blue II. The compact glass pack suits method development, small-scale staining series, and reference inventory without excess bulk. Stated molar mass and density values aid concentration calculations and formulation of working solutions. Users can integrate the dye into established protocols for solvent-based blue colouration while relying on the listed purity grade and identity data. Standard laboratory handling for solid organic dyes applies throughout use and storage on the bench.
This article is part of Microscopy stains & staining solutions, in Dyes, stains & indicators.
Key features
- CAS number: 17354-14-2
- Pack sizes: 10 g, 25 g, 100 g, 250 g, 500 g, 1 kg
- EG nr.: 241-379-4
- Purity: pure
- Empirical formula: C₂₂H₂₆N₂O₂
- Molar mass: 350,45 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about Sudan Blue II (C.I. 61554), pure, 10 g, glass
What is this article?
Sudan Blue II (C.I. 61554), pure, 10 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.