Pigment Yellow 74

Pigment Yellow 74
Names
	Other names Hansa Yellow 5GXB
Identifiers
CAS Number	6358-31-2;
3D model (JSmol)	Interactive image;
ChemSpider	21172327;
ECHA InfoCard	100.026.153
EC Number	228-768-4;
PubChem CID	22829;
UNII	85338B499O;
CompTox Dashboard (EPA)	DTXSID7025920 ;
	InChI InChI=1S/C18H18N4O6/c1-11(23)17(18(24)19-13-6-4-5-7-15(13)27-2)21-20-14-9-8-12(22(25)26)10-16(14)28-3/h4-10,17H,1-3H3,(H,19,24) Key: ZTISORAUJJGACZ-UHFFFAOYSA-N;
	SMILES N(=NC(C(NC1=C(OC)C=CC=C1)=O)C(C)=O)C2=C(OC)C=C(N(=O)=O)C=C2;
Properties
Chemical formula	C18H18N4O6
Molar mass	386.364 g·mol−1
Appearance	yellow powder
Density	1.436 g/cm3
Melting point	290 °C (554 °F; 563 K) Decomposes
Solubility in water	7.6 µg/L
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Pigment Yellow 74 is an azo dye and classified as an arylide yellow. It is an intensely yellow-green solid.^[1] It is prepared by azo coupling of the diazonium derivative of 2-methoxy-4-nitroaniline with 2-methoxyacetoacetanilide.^[2] It is a flat molecule, enforced by the hydrogen-bonding via the ketohydrazide group.^[3]

Pigment Yellow 74 is a popular component of artist's paints^[4] and tattoo inks.^[5]

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