Description
Hematoxylin (C.I. 75290) is a classical natural dye intended for microscopy, supplied with CAS number 517-28-2 and empirical formula C₁₆H₁₄O₆. The molar mass is 302,29 g/mol, providing a clear molecular basis for formulation and batch documentation. Laboratories prepare hematoxylin-based staining solutions for routine and research microscopy, including protocols that rely on Colour Index designation 75290 for dye identity. The product from manufacturer Carl ROTH belongs to dyes and pigments for biological applications and supports consistent preparation of working stains when handled according to standard microscopy practice. Compact packaging suits method validation, teaching collections, and specialised staining series that require controlled dye input without large bulk quantities, while the published CAS, EG number, and formula support traceable reagent selection.
This article is part of Microscopy stains & staining solutions, in Dyes, stains & indicators.
Key features
- Appearance: light-brown powder
- Maximum absorption: ~292 nm in methanol
- pH value (1 % in H2O): 5.0-7.0
- CAS number: 517-28-2
- Pack sizes: 10 g, 100 g, 50 g
- EG nr.: 208-237-3
- Empirical formula: C₁₆H₁₄O₆
- Molar mass: 302,29 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
WarningHazard Statements (H-Phrases)
Precautionary Statements (P-Phrases)
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Microscopy stains & staining solutions
Catalogue
Brand
Questions about Hematoxylin (C.I. 75290), for microscopy, 10 g, glass
What is this article?
Hematoxylin (C.I. 75290), for microscopy, 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?
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.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.