// Workers AI · dad joke modeWhat did Disperse Yellow 56 say? "I'm dyeing to meet you.

Disperse Yellow 56
Identifiers
CAS Number	54077-16-6 ;
3D model (JSmol)	Interactive image;
ChemSpider	23351345;
ECHA InfoCard	100.132.854
EC Number	611-091-7;
PubChem CID	136164957;
	InChI InChI=1S/C21H15N5O2/c27-20-17-8-4-5-9-18(17)22-21(28)19(20)26-25-16-12-10-15(11-13-16)24-23-14-6-2-1-3-7-14/h1-13H,(H2,22,27,28) Key: GZCKCZAMIMLHDK-UHFFFAOYSA-N;
	SMILES C1=CC=C(C=C1)N=NC2=CC=C(C=C2)N=NC3=C(C4=CC=CC=C4NC3=O)O;
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Disperse Yellow 56 is a disazo dye from the group of disperse dyes that is used in the textile industry for dyeing polyester.^[1]

Properties

The dye may be carcinogenic due to reductive cleavage into carcinogenic arylamines.^[2] Therefore, the use of disperse dyes such as Disperse Yellow 56, Disperse Yellow 23, Disperse Yellow 7, and Disperse Red 151, which are derived from p-aminoazobenzene, is highly restricted, and they are included on the Restricted Substances List (RSL) of organizations such as the Apparel and Footwear International RSL Management Group (AFIRM).^[3]^[4]