Zum Problem der Farbträger des Ultramarin-Grün und des Ultramarin-Rot / On the Problem of the Colored Species in Ultramarine Green and Ultramarine Red

ESR and UV/VIS spectra indicate that the color of ultramarine green is due to two radical ions S2- (yellow) and S3- (blue) whereas ultramarine red contains the neutral sulfur molecule S4 (red) predominantly. On heating in chlorine gas, ultramarine violet was converted to a red powder which exhibited the ESR signal of SO3- with g = 2.0036 and in its reflection spectrum the characteristic band of S3 near 24,400 cm-1.

• Publication year

  1979

• Venue

  Zeitschrift für Naturforschung B

• Publication date

  1979-12-01

• Fields of study

  Chemistry

• Identifiers
  DOI 10.1515/znb-1979-1210
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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