Description
It is registered under CAS number 16823-51-1 and characterised by the empirical formula C₂₉H₂₀ClN₇O₁₁S₃ with a molar mass of 774,16 g/mol, enabling precise preparation of solutions and reproducible experimental setups. This material is intended for research environments that require a well-defined reactive blue dye for staining, binding studies, or method development. Available from manufacturer Carl ROTH as part of the chemicals and biochemicals portfolio, it supports routine laboratory handling with a quantity suitable for repeated trials and protocol optimisation. The stated molecular weight and formula assist documentation, safety assessment, and calculation of working concentrations. Laboratories engaged in dye chemistry, textile-related model systems, or broader biochemical colourant research can incorporate this grade into analytical and preparative workflows. Clear identity data and a convenient solid pack size help streamline ordering, storage planning, and day-to-day use at the bench without unnecessary excess material.
This article is part of Organic building blocks & synthesis reagents, in Organic chemicals & synthesis reagents.
Key features
- IR-spectrum: corresponds to reference spectrum
- Colour: dark blue to black
- Form: powder
- Color intensity: 98 to 102 %
- CAS number: 16823-51-1
- Pack sizes: 25 g, 50 g, 100 g, 250 g
- Empirical formula: C₂₉H₂₀ClN₇O₁₁S₃
- Molar mass: 774,16 g/mol
- Product type: Biochemical dye
- Application area: Laboratory research
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about Reactive Blue 5, 25 g
What is this article?
Reactive Blue 5, 25 g is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Organic building blocks & synthesis reagents, inside Organic chemicals & synthesis reagents, in Lab chemicals.
A building block is an organic molecule bought to become part of a larger one. The structure, the CAS number and the purity decide it. A 95 percent reagent and a 99.9 percent reagent of the same name leave different impurities in the product. The functional groups are the reason it was chosen.
An organic chemical is built on carbon. In this category it is a building block or a reagent for making another molecule: a starting material, a coupling agent, a polymer, a PEG. Purity is a specification of which impurities remain. The structure, the CAS number and the grade decide whether two bottles are the same substance. Structures and properties are on PubChem. Nomenclature is IUPAC. Classification follows ECHA and the CLP Regulation.
Which category should I open next?
The category is Organic chemicals & synthesis reagents. The sub-category is Organic building blocks & synthesis reagents. The catalogue is Lab chemicals.
Shelves beside this one are Polymers, PEGs & silicones and Click chemistry, bioconjugation & synthesis reagents.
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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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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.