Pigment Yellow 13 is an

organic compound In chemistry, organic compounds are generally any chemical compounds that contain carbon-hydrogen or carbon-carbon bonds. Due to carbon's ability to catenate (form chains with other carbon atoms), millions of organic compounds are known. The ...

and an

azo compound Azo compounds are organic compounds bearing the functional group diazenyl (, in which R and R′ can be either aryl or alkyl groups). IUPAC defines azo compounds as: "Derivatives of diazene (diimide), , wherein both hydrogens are substituted ...

. It is a widely used yellow pigment. It is also classified as a

diarylide pigment Diarylide pigments are organic compounds that are used as pigments in inks and related materials. They often are yellow or yellow-green. To some extent, these organic compounds have displaced cadmium sulfide from the market. They exist as yellow ...

, being derived from

3,3'-dichlorobenzidine 3,3'-Dichlorobenzidine is an organic compound with the formula (C6H3Cl(NH2))2. The pure compound is pale yellow, but commercial samples are often colored. It is barely soluble in water and is often supplied as a wet paste. It is widely used in the ...

. It is closely related to

Pigment Yellow 12 Pigment Yellow 12 is an organic compound and an azo compound. It is a widely used 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 t ...

, wherein the two xylyl groups are replaced by phenyl.{{cite encyclopedia, authors=K. Hunger. W. Herbst , title=Pigments, Organic, encyclopedia=Ullmann's Encyclopedia of Industrial Chemistry, publisher=Wiley-VCH, place=Weinheim, year=2012, doi=10.1002/14356007.a20_371, isbn=978-3527306732

References

Pigments Organic pigments Shades of yellow Diarylide pigments