Description
Patent blue VF (C.I. 42045) is an extra pure triarylmethane dye supplied for laboratory and biological staining work. It is identified by CAS number 129-17-9, empirical formula C₂₇H₃₁N₂NaO₆S₂ and molar mass 566,66 g/mol, with a reported density of 0,294 g/cm³ and flash point of 180,6 °C. The material is Categories of use include dyes for biological applications where a defined Colour Index reference and consistent purity support reproducible staining protocols. Physical data from manufacturer Carl ROTH allow straightforward integration into existing laboratory workflows and documentation. The dye is handled as a solid laboratory chemical; users should consult the accompanying safety information before preparation of stock solutions or staining baths. This pack size is practical for method development, teaching laboratories and routine biological staining where modest quantities of an extra pure grade are required.
This article is part of Dyes & pigments, in Dyes, stains & indicators.
Key features
- Appearance: dark blue-green to dark purple powder
- Absorption max. (in H2O): 637-640 nm
- CAS number: 129-17-9
- Pack sizes: 10 g, 25 g, 100 g
- EG nr.: 204-934-1
- Molar mass: 566,66 g/mol
- Density: 0,294 g/cm³
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about Patent blue VF (C.I. 42045), extra pure, 10 g, glass
What is this article?
Patent blue VF (C.I. 42045), extra pure, 10 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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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.