Description
Acid fuchsine (C.I. 42685) is a dye for microscopy supplied with CAS number 3244-88-0 and empirical formula C₂₀H₁₇N₃Na₂O₉S₃. The compound has a molar mass of 585,54 g/mol and a density of 1,74 g/cm³, and is applied in biological staining protocols where intense acid-fuchsin colouration is required for tissue and cellular structures. This from manufacturer Carl ROTH provides a practical amount for histology, cytology and related microscopy workflows in research and teaching laboratories. Listed among dyes and pigments for biological applications, acid fuchsine supports contrast enhancement in established staining procedures and is valued for its strong tinctorial properties. The material is identified under EG number 221-816-5 and carries UN number 3259 for transport classification. Laboratories select this grade when preparing staining solutions that demand a defined chemical identity and consistent performance in microscopic examination of biological specimens.
This article is part of Microscopy stains & staining solutions, in Dyes, stains & indicators.
Key features
- Appearance: dark green powder
- Maximum absorption: 530-565 nm
- pH-transition range: 12.0 (red) -14.0 (colorless)
- CAS number: 3244-88-0
- Pack sizes: 10 g, 1 g, 25 g
- EG nr.: 221-816-5
- Empirical formula: C₂₀H₁₇N₃Na₂O₉S₃
- Molar mass: 585,54 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
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Questions about Acid fuchsine (C.I. 42685), for microscopy, 1 g, glass
What is this article?
Acid fuchsine (C.I. 42685), for microscopy, 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.
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