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Identification of α-phase crystallization Pigment Red 254 in artist's paints by powder x-ray diffraction

Published online by Cambridge University Press:  15 April 2014

Timothy Greening
Timothy Greening*
Affiliation:
Art Conservation Program, Queen's University, Kingston, ON, Canada
*
a) Author to whom correspondence should be addressed. Electronic mail: [email protected]
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Abstract

Diketopyrrolopyrrole (DPP) is a pigment widely used in modern paints for industrial and artistic applications. Identification of this pigment in paint for art authentication and forensics has previously been accomplished with gas chromatography/mass spectrometry or Laser Raman. Three commercial artist's paints containing DPP were analyzed by x-ray diffraction (XRD). Alpha phase DPP was identified in two of the samples, barite extender the only crystalline component identified in the other sample. In conclusion, XRD analysis of paint samples can identify DPP, as can other organic analyses, but has the advantage of being non-destructive and also identifying the crystal structure. However, the fact that in one sample only extender could be identified does impose some limitations on the analysis of paints.

Keywords

pigmentsartpaintart authenticationx-ray diffraction
Type
Laboratory Note
Information
Powder Diffraction , Volume 29 , Issue 3 , September 2014 , pp. 307 - 310
Copyright
Copyright © International Centre for Diffraction Data 2014 

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References

Doboz, A. (2013). Personal Discussion with Timothy Greening (Kingston, Ontario). Google Scholar
HPUC Chemical Co. (2010). “Pigment Red 254(UN8172 Irgazin DPP red BO),” http://www.union-pigment.com/china/pigment_red_254_2030.html (Retrieved 14 October 2012).Google Scholar
Nelson, M. R. (2011). “Authentic or not? Chemistry solves the mystery,” ChemMatters 29(2), 15–17.Google Scholar
Munter, P. (2008). “Uncovering art forgery using analytical chemistry,” http://www.sas.upenn.edu/~patann/ImagesforPresentation-Munter.ppt (Retrieved 15 October 2012).Google Scholar
Sands, S. (2009). The Subtleties of Color Just Paint Issue 21 http://www.goldenpaints.com/justpaint/jp21article1.php (Retrieved 14 October 2012).Google Scholar
Sands, S. (2012). Personal Communication with Timothy Greening, via email.Google Scholar
Shamekhi, S. S. and Nourmohammadian, F. (2012). “Crystal phase study of pigment red 254 in the presence of ionic liquids,” Progr. Color, Colorants Coat. 5, 1–6.Google Scholar
Smith, R. (2003). New Artist's Handbook (DK Publishing, New York), p. 15.Google Scholar
US Patent 7431762 B2.Google Scholar