Vat Yellow 4

Vat Yellow 4
Other names Golden Yellow GK Dibenzochrysenedione Dibenzpyrenequinone Tyrian Yellow I-GOK C.I. 59100 Dibenzo[b,def]chrysene-7,14-dione 3,4:8,9-dibenzopyrene-5,10-dione
Identifiers
CAS number	128-66-5 Y
PubChem	31412
ChemSpider	29142 Y
KEGG	C19545 Y
Jmol-3D images	Image 1
SMILES O=C2c1ccccc1c6c5c2ccc4c3ccccc3C(=O)c(c45)cc6
InChI InChI=1S/C24H12O2/c25-23-17-7-3-1-5-13(17)15-9-11-20-22-16(10-12-19(23)21(15)22)14-6-2-4-8-18(14)24(20)26/h1-12H Y Key: ZTWQZJLUUZHJGS-UHFFFAOYSA-N Y InChI=1/C24H12O2/c25-23-17-7-3-1-5-13(17)15-9-11-20-22-16(10-12-19(23)21(15)22)14-6-2-4-8-18(14)24(20)26/h1-12H Key: ZTWQZJLUUZHJGS-UHFFFAOYAD
Properties
Molecular formula	C24H12O2
Molar mass	332.35 g mol−1
Appearance	viscous orange liquid
Density	1.418g/cm3
Boiling point	606.7 °C @ 760mmHg
Solubility in water	soluble
Hazards
Main hazards	Possible carcinogen
Flash point	219.93
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Vat Yellow 4 is a yellow synthetic anthraquinone vat dye. It has the appearance of a viscous orange liquid.

Vat Yellow 4 is used mostly as a dye for textiles and paper.

Together with benzanthrone, it is used in some older pyrotechnic compositions for green and yellow colored smokes.

Vat Yellow 4 is a Group 3 carcinogen according to the IARC, as the evidence of its carcinogenity to humans is inadequate.