Vat Yellow 4

Structural formula
General
Surname	Vat Yellow 4
other names	Dibenzo [ c , pqr ] tetraphen-7,14-dione ( IUPAC ) ; Dibenzo [ b , def ] chrysen-7,14-dione;
Molecular formula	C 24 H 12 O 2
Brief description	viscous orange liquid
External identifiers / databases
EC number	204-903-2
ECHA InfoCard	100.004.459
PubChem	31412
ChemSpider	29142
Wikidata	Q6585166
properties
Molar mass	332.35 g · mol -1
Physical state	liquid
safety instructions
GHS labeling of hazardous substances	no GHS pictograms
	no GHS pictograms
H and P phrases	H: no H-phrases
	P: no P-phrases
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

CI Vat Yellow 4 is a polycyclic aromatic diketone that belongs to the application group of vat dyes .

presentation

CI Vat Yellow 4 can be produced from 1,5-dibenzoylnaphthalene with AlCl ₃ , NaCl and oxygen in a Scholl reaction .

use

CI Vat Yellow 4 is a viscous orange liquid, which as a vat dye for dyeing of cotton , wool , and cellulose acetate is used. It reacts with reducing agents to form an almost colorless leuco compound , which is reoxidized to the colored compound after application to the substrate to be colored.

The dibromo derivative of Vat Yellow 4 is also used as a vat dye under the name Vat Orange 1 .

Web links

Commons : Vat Yellow 4 - collection of images, videos and audio files

Individual evidence

↑ ^a ^b Entry on Vat Yellow 4 at ChemicalBook , accessed on March 19, 2020.
↑ Template: CL Inventory / not harmonized There is not yet a harmonized classification for this substance . A labeling of dibenzo [ b , def ] chrysene-7,14-dione in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on March 19, 2020, is reproduced from a self-classification by the distributor .
^ ^A ^b Heinrich Zollinger: Color Chemistry: Syntheses, Properties, and Applications of Organic Dyes and Pigments . 3. Edition. WILEY-VCH Verlag, Weinheim 2003, ISBN 3-906390-23-3 , p. 293–294 ( limited preview in Google Book search).
↑ External identifiers from or database links to CI Vat Orange 1 : CAS number: 3564-71-4, EC number: 661-053-9, ECHA InfoCard: 100.187.578 , PubChem : 2844775 , ChemSpider : 2121280 , Wikidata : Q72516173 .

[CB-1] Entry on Vat Yellow 4 at ChemicalBook , accessed on March 19, 2020.

[2] Template: CL Inventory / not harmonized There is not yet a harmonized classification for this substance . A labeling of dibenzo [ b , def ] chrysene-7,14-dione in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on March 19, 2020, is reproduced from a self-classification by the distributor .

[HZ-3] A ^b Heinrich Zollinger: Color Chemistry: Syntheses, Properties, and Applications of Organic Dyes and Pigments . 3. Edition. WILEY-VCH Verlag, Weinheim 2003, ISBN 3-906390-23-3 , p. 293–294 ( limited preview in Google Book search).

[4] External identifiers from or database links to CI Vat Orange 1 : CAS number: 3564-71-4, EC number: 661-053-9, ECHA InfoCard: 100.187.578 , PubChem : 2844775 , ChemSpider : 2121280 , Wikidata : Q72516173 .