Beschreibung
Ponceau 4R (C.I. 16255) is een extra puur azokleurstofreagens voor laboratorium- en analytisch gebruik. Het wordt geïdentificeerd door het CAS-nummer 2611-82-7 en de brutoformule C₂₀H₁₁N₂O₁₀S₃Na₃, met een molaire massa van 604,47 g/mol en een dichtheid van 1,772 g/cm³. Typische toepassingen zijn onder meer kleuringsprotocollen, kleurmarkering en kleurstofchemisch werk waarbij een gedefinieerde Colour Index-referentie vereist is. Verkrijgbaar bij fabrikant Carl ROTH en vermeld onder EG-nummer 220-036-2, is deze extra pure kwaliteit geschikt voor laboratoria die een betrouwbare bron van Ponceau 4R nodig hebben voor routinematige experimentele procedures. Gedocumenteerde fysisch-chemische gegevens samen met de compacte glazen verpakking maken het een praktische toevoeging aan voorraden kleurstoffen en indicatoren die worden gebruikt in analytische en life-science workflows.
Dit artikel hoort thuis in Microscopiekleurstoffen & kleuringsoplossingen, in Kleurstoffen, vloeistoffen & indicatoren.
Belangrijkste kenmerken
Recent bekeken
Misschien vind je dit ook leuk
Browse related categories
Category
Sub-category
Microscopy stains & staining solutions
Catalogue
Labor- und Industriechemikalien
Brand
Questions about Ponceau 4R (C.I. 16255), extra puur, 10 g, glas
What is this article?
Ponceau 4R (C.I. 16255), extra puur, 10 g, glas 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 Labor- und Industriechemikalien.
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 Labor- und Industriechemikalien.
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.
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.

