Pigment Yellow 10

Pigment Yellow 10
Names
	Other names Benzidine Yellow 10G, Sanyo Pigment Yellow 8105
Identifiers
CAS Number	6407-75-6;
3D model (JSmol)	Interactive image;
ECHA InfoCard	100.026.401
PubChem CID	21118695;
UNII	F4E9M94HBX ;
CompTox Dashboard (EPA)	DTXSID50884296 ;
	InChI 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;
	SMILES Clc1ccc(Cl)cc1N=Nc2c(C)nn(c2O)-c3ccccc3;
Properties
Chemical formula	C16H12Cl2N4O
Molar mass	347.20 g·mol−1
Appearance	Yellow solid
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references

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] 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

^ 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.
^ A. Whitaker (1988). "CI Pigment Yellow 10, 4--5-methyl-2-phenyl-3H-pyrazol-3-one". Acta Crystallographica C. C44 (10): 1767–70. Bibcode:1988AcCrC..44.1767W. doi:10.1107/S0108270188006791.

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[Ullmann1-1] 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--5-methyl-2-phenyl-3H-pyrazol-3-one". Acta Crystallographica C. C44 (10): 1767–70. Bibcode:1988AcCrC..44.1767W. doi:10.1107/S0108270188006791.

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