Name | Acid Yellow 44 |
Synonyms | Acid Yellow 44 Acid Yellow 6G ACID YELLOW 44 CI ACID YELLOW 44 Brilliant Yellow 6G (1,1'-biphenyl)-2,2'-disulfonic acid, 4,4'-bis((2-oxo-1-((phenylamino)carbonyl disodium 5,5'-dimethyl-4,4'-bis[[2-oxo-1-[(phenylamino)carbonyl]propyl]azo][1,1'-biphenyl]-2,2'-disulphonate [1,1'-Biphenyl]-2,2'-disulfonic acid, 5,5'-dimethyl-4,4'-bis[[2-oxo-1-[(phenylamino) carbonyl]propyl]azo]-, disodium salt Disodium 5-[[1,3-dioxo-1-(phenylamino)butan-2-yl]azo]-2-[4-[[1,3-dioxo-1-(phenylamino)butan-2-yl]azo]-5-methyl-2-sulfonatophenyl]-4-methylbenzenesulfonate |
CAS | 2429-76-7 |
EINECS | 219-386-9 |
Molecular Formula | C34H33N6NaO10S2 |
Molar Mass | 772.78 |
Physical and Chemical Properties | Yellow powder. Soluble in water, the aqueous solution is bright green and yellow, the addition of concentrated hydrochloric acid is reddish, and the addition of alkali solution is yellow. Slightly soluble in ethanol, acetone, ethylene glycol ether. Dark yellow in concentrated sulfuric acid, diluted to green yellow. Red-orange to green-yellow in concentrated nitric acid. |
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
use | weakly acidic yellow 6G is used for dyeing wool and its fabrics. the dyeing is uniform and slow, the color light is tender and bright, it has good wet treatment fastness, and the sun fastness is not ideal (light color is grade 4). It can be combined with weak acid brilliant blue 5GM and weak acid brilliant blue 6B to dye bright colors such as light lake blue and fruit green. Used for dyeing silk, good levelness and slightly lower fastness than wool products. It can also be used for direct printing of wool and silk fabrics with good fastness. It is also used for coloring leather and paper. Used for dyeing silk, nylon, and wool fibers, and can also be used for direct printing of silk fabrics |
Production method | Using 3,3 '-dimethylbenzidine -6,6'-disulfonic acid and acetanilide as raw materials, 3,3 '-dimethylbenzidine -6,6'-disulfonic acid is double nitrided and combined with acetacetanilide to obtain the product. The finished product is salted out, filtered, dried and crushed.. |