Pigment Yellow 14

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Pigment Yellow 14
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.024.354 Edit this at Wikidata
EC Number
  • 226-789-3
UNII
  • InChI=1S/C34H30Cl2N6O4/c1-19-9-5-7-11-27(19)37-33(45)31(21(3)43)41-39-29-15-13-23(17-25(29)35)24-14-16-30(26(36)18-24)40-42-32(22(4)44)34(46)38-28-12-8-6-10-20(28)2/h5-18,31-32H,1-4H3,(H,37,45)(H,38,46)
    Key: LQZFGPJGXVFSTR-UHFFFAOYSA-N
  • CC1=CC=CC=C1NC(=O)C(C(=O)C)N=NC2=C(C=C(C=C2)C3=CC(=C(C=C3)N=NC(C(=O)C)C(=O)NC4=CC=CC=C4C)Cl)Cl
Properties
C34H30Cl2N6O4
Molar mass 657.55 g·mol−1
Appearance yellow solid
Density 1.41 g/cm3[1]
Hazards
GHS labelling:
H413
P273, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Pigment Yellow 14 is an organic compound classified as an azo compound. It is a commercial yellow pigment. It is also classified as a diarylide pigment, being derived from 3,3'-dichlorobenzidine. It is closely related to Pigment Yellow 13, wherein the two xylyl groups are replaced by an ortho tolyl.[2] It is often depicted as an azo (-N=N-) structure, but according to X-ray crystallography closely related compounds exist as the keto-hydrazide tautomers.[1]

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