Description
Ethyl violet (C.I. 42600) is an extra-pure triarylmethane dye used as a pH indicator and analytical colourant in laboratory settings. It is registered under CAS number 2390-59-2 and EG nr. 219-231-5, with empirical formula C₃₁H₄₂N₃Cl and molar mass 492,15 g/mol, enabling precise weighing and solution make-up for indicator work. suits method development, small-batch staining or colour-change trials where extra-pure quality is preferred over bulk industrial grades. Classification within analytical chemicals and pH indicators reflects its role in endpoint visualisation and related dye applications. Extra-pure specification supports cleaner blanks and more consistent hue development when preparing dilute working solutions. Supplied from manufacturer Carl ROTH, this catalogue unit balances documented chemical identity with a practical laboratory pack size. Handle and dissolve according to established dye and indicator protocols appropriate to the analytical task.
This article belongs on Reference substances & reagents (other), in Analytical standards & reference materials.
Key features
- Appearance: olive green to dark brown cryst. powder
- Appearance of solution (0,1 % in H2O): clear, dark purple
- Loss on drying (105 °C): ≤5,0 %
- CAS number: 2390-59-2
- Pack sizes: 5 g, 25 g, 100 g
- EG nr.: 219-231-5
- Empirical formula: C₃₁H₄₂N₃Cl
- Technical Information Sheet:
- Safety Data Sheet:
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Analytical standards & reference materials
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Reference substances & reagents (other)
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Produits chimiques de laboratoire et industriels
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Questions about Ethyl violet (C.I. 42600), extra pure, 5 g, glass
What is this article?
Ethyl violet (C.I. 42600), extra pure, 5 g, glass is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Reference substances & reagents (other), inside Analytical standards & reference materials, in Produits chimiques de laboratoire et industriels.
A reference substance has a stated identity and a stated content, used to check a method or to standardise a titration. It is a more tightly specified article than a reagent grade bottle of the same name. The lot's certificate is part of the product.
A reference material is the article against which another result is compared. Its value is stated, and the uncertainty of that value is part of the product. An ICP or ion standard is a solution of known concentration. A volumetric standard is for titration. A chromatography standard is the peak you match. The grade names, including pharmacopoeia and ASTM, say which impurities were limited. Identity is checked on PubChem. Names follow IUPAC. Medicinal grades follow the European Pharmacopoeia and USP.
Which category should I open next?
The category is Analytical standards & reference materials. The sub-category is Reference substances & reagents (other). The catalogue is Produits chimiques de laboratoire et industriels.
Shelves beside this one are ICP, AAS & ion standards, Chromatography standards (GC, HPLC, pesticides), Volumetric standard solutions (titration), Reagents for analysis (Ph. Eur., ASTM, DIN), Spectroscopy & physical property standards and Indicators & indicator solutions.
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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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