PRODUCT IDENTIFICATION

c1ccc2c(c1)C(=O)C(C2=O)c3ccc4cc(cc(c4n3)S(=O) (=O)[O-])S(=O) (=O)[O-].[Na+].[Na+]

CLASSIFICATION

Quinoline, Food coloring, Indandione

EXTRA NOTES

Quinoline

PHYSICAL AND CHEMICAL PROPERTIES

MEG (25), DEG (55), Isopropanol (150), PG (35), Glycerol (35), Methanol (1), Ethanol (1), Methoxyethanol (15)

EXTERNAL LINKS & GENERAL DESCRIPTION

Wikipedia Linking - Quinoline Yellow WS

Google Scholar Search - Quinoline Yellow WS

Drug Information Portal (U.S. National Library of Medicine) - Quinoline Yellow WS

PubChem Compound Summary - Quinoline Yellow WS

KEGG (Kyoto Encyclopedia of Genes and Genomes) - Quinoline Yellow WS

http://www.ebi.ac.uk/ - Quinoline Yellow WS

http://www.ncbi.nlm.nih.gov/ - Quinoline Yellow WS

Local:
Quinoline Yellow is a synthetic dye for yellow to greenish-yellow coloring; obtained from coal tar; sipirit soluble, it's sodium salts are water soluble. It is a mixture of disulfonates (principally), monosulfonates and trisulfonates of 2-(2-quinolyl) indan-1,3-dione. It is used in coloring food, cosmetics and meications (FD&C Yellow No.10). But It is banned in some countries as it may cause dermatitis. Lake is a chelate formed between a mordant dye and a polyvalent metal ion (aluminum and ferric iron are common. Both have three valencies) which forms covalent and coordinate bond with fibers and proteins in a manner similar to that between the mordant and the dye and so as to form an insoluble lake.

WATER SOLUBLE

APPEARANCE

DYE CONTENT

70.0% min (based on sodium salt calculation)

LOSS ON DRYING

30.0% max

HEAVY METALS

20ppm max

FREE AMINE

0.5% max

LEAD

10ppm max

ARSENIC

2ppm max

HEAVY METALS

10ppm max

0.5% max (in water)

LAKE

APPEARANCE

DYE CONTENT

32.0 - 42.0%

LOSS ON DRYING

12.0 - 17.0%

FREE DYE

0.5% max

LEAD

10ppm max

ARSENIC

2ppm max

HEAVY METALS

10ppm max