Pararosaniline

Pararosaniline
IUPAC name

[4-[Bis(4-aminophenyl)methylidene]-1-cyclohexa-2,5-dienylidene]azanium chloride
Other names

Pararosaniline hydrochloride
Pararosaniline chloride
C.I. 42500
C.I. Basic Red 9, monohydrochloride
Para magenta
Identifiers
CAS number 569-61-9
PubChem 11292
UNII 20N4C0M8NM Y
KEGG C19210 Y
Jmol-3D images Image 1
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
 Y (verify) (what is: Y/N?)
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

  1. ^ Horobin RW, Kiernan JA (2002) Conn's Biological Stains, 10th ed. Oxford: BIOS.
  2. ^ Mowry RW, Emmel VM (1978) Aldehyde fuchsin staining, direct or after oxidation: problems and remedies, with special reference to pancreatic B cells, pituitaries and elastic fibers. Stain Technology 53: 141-154.

Further reading