Pigment Yellow 10

Pigment Yellow 10 is an organic compound that is classified as a Monoazopyrazolone pigment. It is used as a yellow colorant, notably as yellow road marking on highways in the US. The compound is synthesized by coupling the diazonium salt derived from dichloroaniline with the pyrazolone.[1]

Pigment Yellow 10
Names
Other names
Benzidine Yellow 10G, Sanyo Pigment Yellow 8105
Identifiers
3D model (JSmol)
ECHA InfoCard 100.026.401
UNII
  • InChI=1S/C16H12Cl2N4O/c1-10-15(20-19-14-9-11(17)7-8-13(14)18)16(23)22(21-10)12-5-3-2-4-6-12/h2-9,15H,1H3
    Key: SYIDJAUAPDQFRN-UHFFFAOYSA-N
  • Clc1ccc(Cl)cc1N=Nc2c(C)nn(c2O)-c3ccccc3
Properties
C16H12Cl2N4O
Molar mass 347.20
Appearance yellow solid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
Pigment Yellow 10 is commonly used for yellow road markings

The structure of the dye, as determined by X-ray crystallography, consists of planar molecule with a C=O bond and two hydrazone groups.[2]

References
  1. K. Hunger; W. Herbst (2012). "Pigments, Organic". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a20_371. ISBN 978-3527306732.
  2. A. Whitaker (1988). "CI Pigment Yellow 10, 4-[2',5'-(dichlorophenyl)hydrazono]-5-methyl-2-phenyl-3H-pyrazol-3-one". Acta Crystallographica C. C44 (10): 1767–70. doi:10.1107/S0108270188006791.


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