Description
Acid blue 93 (C.I. 42780) is a water-soluble dye of p.a. quality with CAS number 28983-56-4 and empirical formula C₃₇H₂₇N₃O₉S₃Na₂. The molar mass is 799,81 g/mol, and the product is As a classical acid dye for biological applications, it is used in staining procedures where intense blue colouration and aqueous solubility are required. Laboratories select this grade for microscopy, histology-related work and other dye-based protocols that benefit from a defined Colour Index designation. The preparation from manufacturer Carl ROTH is specified as p.a. and water soluble, supporting reproducible staining results and straightforward solution preparation. is practical for routine bench use and controlled inventory. Documented CAS and EG identifiers aid regulatory and quality documentation. Acid blue 93 remains a versatile choice among dyes and pigments for biological staining when consistent colour performance and clear chemical identity matter.
This article belongs on Dyes & pigments, in Dyes, stains & indicators.
Key features
- Appearance: brownish crystals
- Solubility (water): complies
- Absorption max. (in H2O): 594-610 nm
- CAS number: 28983-56-4
- Pack sizes: 10 g, 25 g, 5 g, 100 g
- EG nr.: 249-352-9
- Molar mass: 799,81 g/mol
- Grade: p.a., water soluble
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about Acid blue 93 (C.I. 42780), p.a., water soluble, 5 g, glass
What is this article?
Acid blue 93 (C.I. 42780), p.a., water soluble, 5 g, glass is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Dyes & pigments, inside Dyes, stains & indicators, in Lab chemicals.
A dye dissolves. A pigment is a particle dispersed in a medium. On this shelf they are the colouring substances used as reagents or as markers, specified by Colour Index name or by structure where it is known. The same common name can hide two constitutions.
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 Dyes & pigments. The catalogue is Lab chemicals.
Shelves beside this one are Fluorescent dyes & labels and Microscopy stains & staining solutions.
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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