Quinacridone dye

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Description

A series of synthetic red and violet dyes composed of linear quinacridones that are made from terephthalic acid. Quinacridone dyes can exist in four crystalline allotropes, two of which are sold as red and violet pigments. Although synthesized in 1896, quinacridone colors were first recognized as useful pigments by W. Struve at DuPont in 1955 and marketed in 1958 under the name Monastral. These lightfast colorants are used in paints, printing inks, and plastics.

FTIR PV19(MFA)

PV19 kremer23700.TIF

FTIR PV19(MFA)

PV19 kremer23710.TIF

FTIR PV19(MFA)

PV019 sun quinacridone red 228-0022.TIF

FTIR PR122(MFA)

PR122 sun quinacridone magenta 228-0013.TIF

FTIR PR202(MFA)

PR202 sun quinacridone magenta 228-1215.TIF

FTIR PR209(MFA)

PR209 Hostaperm Red.PNG

FTIR TatePR209(MFA)

PR209 Hostaperm Red EG (Tate).PNG


Synonyms and Related Terms

colorante de quinacridona (Esp.)

Examples include:

Red - Monastral red [DuPont]; Acra red [Liquitex]; Acra crimson [Binney and Smith]; Bocour red [Bocour Artist Colors];Thalo Red Rose

Violet - Monastral violet, Pigment Violet 19; CI 46500;

Comparisons

Pigment number Manufacture Pigment name Manufacture CI number Comments
PV019 Kremer unspecified 23700
PV019 Kremer unspecified 23710 same as PV019 Sun quinacradone violet 228-1119
PV019 Sun quinacradone red 228-0022
PV019 Sun quinacradone violet 228-1119 same as PV019 Kremer 23710
PR122 Sun quinacradone magenta 228-0013 same as PR122 Kremer 23152
PV122 Kremer unspecified 23152 same as PR122 Sun 228-0013
PR202 Sun quinacradone magenta 228-1215
PR202 unknown cinquasia magenta RT-343-D unknown from Tate Collection
PR209 unknown hostaperm red EG transparent (quinacradone) unknown spectrum does not match Tate PR209
PR209 unknown hostaperm red EG transparent (quinacradone) sample from the Tate Collection spectrum does not match other PR209

Other Properties

Resistant to alkalis and heat.

Composition violet- C20H12N2O2
Density 1.5
Refractive Index 2.02 - 2.04

Sources Checked for Data in Record

  • R. J. Gettens, G.L. Stout, Painting Materials, A Short Encyclopaedia, Dover Publications, New York, 1966
  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 611
  • Reed Kay, The Painter's Guide To Studio Methods and Materials, Prentice-Hall, Inc., Englewood Cliffs, NJ, 1983
  • Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • Hermann Kuhn, Conservation and Restoration of Works of Art and Antiquities, Butterworths, London, 1986
  • Monona Rossol, The Artist's Complete Health and Safety Guide, Allworth Press, New York, 1994
  • Encyclopedia Britannica, http://www.britannica.com Comment: "chemical compound." Encyclopædia Britannica. 2005. Encyclopædia Britannica Premium Service 7 Apr. 2005 .
  • Website address 1 Comment: www.handprint.com