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Lithol red salts : characterization and deterioration

Kennedy, Alan and Stenger, Jens (2010) Lithol red salts : characterization and deterioration. E-Preservation Science, 7. pp. 147-157. ISSN 1854-3298

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Abstract

Lithol Red salts are one of the commonest 20th century red synthetic organic pigments. We characterized the sodium, barium, and calcium Lithol Red salts with nuclear magnetic resonance spectroscopy, powder X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy, and laser desorption ionization mass spectrometry. The sodium and calcium salts were synthesized and compared to commercial samples. The single crystal structure of calcium Lithol Red is reported here for the first time. Light aging experiments show that the neat powder is very lightfast but that the pigment has poor light stability within paint systems. This suggests that the binding medium facilitates the photodegradation of the pigment for the latter case.

Item type: Article
ID code: 35991
Keywords: lithol, salts, lithol red salts, sulfonated azo pigment, Chemistry
Subjects: Science > Chemistry
Department: Faculty of Science > Pure and Applied Chemistry
Related URLs:
Depositing user: Pure Administrator
Date Deposited: 18 Nov 2011 05:20
Last modified: 17 Apr 2013 11:22
URI: http://strathprints.strath.ac.uk/id/eprint/35991

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