Magdala red

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Description

An orange-red fluorochrome an orange-red obtained from naphthylamine.

Synonyms and Related terms

Phloxin B; C30H20N3+; CID 4456175

Risks

Properties

  • Maximum absorption wavelength = 540 nm
  • Maximum emission wavelength = 570 nm
  • The fluorescence of magdala red changes with pH. It is a non-fluorescent purple below pH=3.0 and above 4.0, it fluoresces.
  • Refractive Index = 1.90
  • Molecular weight = 422.5

Resources and Citations

  • Richard C. Wolbers, Nanette T. Sterman, Chris Stavroudis, Notes for Workshop on New Methods in the Cleaning of Paintings, J.Paul Getty Trust, Los Angeles, 1990
  • CRC Handbook of Chemistry and Physics, Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980 Comment: ref. index= 2.20; The fluorescence of magdala red changes with pH. It is a non-fluorescent purple below pH=3.0 and above 4.0, it fluoresces.

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