Direct Red 79

Name	Direct Red 79
Synonyms	Direct Red 79 C.I.DIRECTRED79 C.I. Direct Red 79 Chlorantine Fast Red 6BLL Direct red 79 (C.I. 29065) C.I. Direct Red 79, tetrasodium salt 4,4'-[carbonylbis[imino(5-methoxy-2-methyl-4,1-7-naphthalenedisulfonic acid Urea, N,N'-bis[[4-[[(3,6-disulfo-8-hydroxy) naphthalene-1-yl]azo]-2-methoxy-5-methyl] phenyl]-, tetrasodium salt tetrasodium 4,4'-[carbonylbis[imino(5-methoxy-2-methyl-4,1-phenylene)azo]]bis[5-hydroxynaphthalene-2,7-disulphonate] 2,7-Naphthalenedisulfonic acid, 4,4-carbonylbisimino(5-methoxy-2-methyl-4,1-phenylene)azobis5-hydroxy-, tetrasodium salt direct red 79 2,7-Naphthalenedisulfonic acid, 4,4'-[carbonylbis [imino(5-methoxy-2-methyl-4,1-phenylene) azo]] bis[5-hydroxy-, tetrasodium salt tetrasodium 4-hydroxy-5-[(E)-{4-[({4-[(E)-(8-hydroxy-3,6-disulfonatonaphthalen-1-yl)diazenyl]-2-methoxy-5-methylphenyl}carbamoyl)amino]-5-methoxy-2-methylphenyl}diazenyl]naphthalene-2,7-disulfonate
CAS	1937-34-4
EINECS	217-708-2
InChI	InChI=1/C37H32N6O17S4.4Na/c1-17-5-27(33(59-3)15-25(17)40-42-29-11-21(61(47,48)49)7-19-9-23(63(53,54)55)13-31(44)35(19)29)38-37(46)39-28-6-18(2)26(16-34(28)60-4)41-43-30-12-22(62(50,51)52)8-20-10-24(64(56,57)58)14-32(45)36(20)30;;;;/h5-16,44-45H,1-4H3,(H2,38,39,46)(H,47,48,49)(H,50,51,52)(H,53,54,55)(H,56,57,58);;;;/q;4*+1/p-4/b42-40+,43-41+;;;

Molecular Formula	C37H28N6Na4O17S4
Molar Mass	1048.8673
Density	1.606[at 20℃]
Water Solubility	2.14g/L at 20℃
Vapor Presure	0Pa at 25℃
Storage Condition	Room Temprature
Physical and Chemical Properties	Soluble in water, the aqueous solution is red to blue red, in water solubility of 15g/L (60 ° C), 24g/L (97 ° C), very sensitive to hard water. The addition of concentrated hydrochloric acid to the aqueous solution resulted in a blue-green precipitate; The addition of concentrated sodium hydroxide solution resulted in a yellow-orange color. Slightly soluble in ethylene glycol ether, insoluble in other organic solvents. Blue in concentrated sulfuric acid, diluted purple; Blue-black solution in concentrated nitric acid, then turned blue, and finally olive. Slight color change of copper and iron ions during staining.

LogP	-2.363 at 20℃
EPA chemical information	Information provided by: ofmpub.epa.gov (external link)
use	direct sun-resistant red 4BL is used for dyeing cotton and viscose fabric, with good dyeing rate and slightly poor dyeing and levelness. It is also used for direct printing of cotton and viscose fabrics, white printing of ground color and white printing, as well as printing on silk and wool fabrics. It can also be used with disperse dyes to dye polyester-viscose blended fabrics in the same bath and for coloring leather, paper and aluminum oxide.
Production method	Using H acid, Clitidine and phosgene as raw materials, the H acid is first diazotized, then coupled with Clitidine, and then the two-molecule coupling product is condensed with a molecule of phosgene to obtain the product. The finished product is salted out, filtered, dried and crushed..

Last Update：2024-04-10 22:29:15