- Pararosaniline
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Pararosaniline [4-[Bis(4-aminophenyl)methylidene]-1-cyclohexa-2,5-dienylidene]azanium chlorideOther namesPararosaniline hydrochloride
Pararosaniline chloride
C.I. 42500
C.I. Basic Red 9, monohydrochloride
Para magentaIdentifiers CAS number 569-61-9 PubChem 11292 UNII 20N4C0M8NM KEGG C19210 Jmol-3D images Image 1 - C1=CC(=[NH2+])C=CC1=C(C2=CC=C(C=C2)N)C3=CC=C(C=C3)N.[Cl-]
Properties Molecular formula C19H18ClN3 Molar mass 323.82 g/mol Appearance Green crystalline solid Melting point 268-270°C (541-543 K) dec.
Solubility in water Slightly soluble Hazards MSDS External MSDS (verify) (what is: / ?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)Infobox references Pararosaniline, Basic Red 9, or C.I. 42500 is a magenta dye having chemical formula C19H18N3Cl. It is one of the four components of basic fuchsine. (The others are rosaniline, new fuchsine and magenta II.)[1] Pararosaniline, which is sold as a single dye, may make the best Schiff's reagent. It is the only basic fuchsine component suitable for making the aldehyde-fuchsine stain for pancreatic islet beta cells[2]
References
Further reading
- Colour Index 3rd Edition Volume 4, Bradford: Society of Dyers and Colourists, 1971, pp. 4388, http://www.colour-index.org/help/3121_Triarylmethane.pdf.
- Gessner, T.; Mayer, U. (2002), "Triarylmethane and Diarylmethane Dyes", Ullmann's Encyclopedia of Industrial Chemistry 6th Edition, Weinheim: Wiley-VCH, doi:10.1002/14356007.a27_179.
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