Molecular Formula | C19H17Cl2N5O4 |
Molar Mass | 450.28 |
Density | 1.38±0.1 g/cm3(Predicted) |
Boling Point | 645.0±55.0 °C(Predicted) |
pKa | 1.16±0.50(Predicted) |
Physical and Chemical Properties | Chemical properties brown-red powder. Slightly soluble in ethanol, acetone, pyridine and DMF. When dyeing, copper and iron ions have an effect on color light. |
Use | Uses Dispersed orange S-4RL is the main color of high-temperature disperse dyes with excellent sun and sublimation fastness. It is mainly used for dyeing polyester-cotton and polyester-viscose blended products and direct printing of cotton-polyester blended fabrics. It can be dyed by high temperature and high pressure method, and it is also suitable for hot melt dyeing. It forms three primary colors with dispersed ruby H2GFL and dispersed dark blue HGL, and splits the middle color and deep thick color. It can also be used with medium-temperature disperse dyes for dyeing acetate fiber, with slightly yellow color, poor soaping fastness of dyed nylon, and low dyeing rate of dyed acrylic fiber. |
Raw Materials | Sulfuric acid Acetic anhydride Acrylonitrile Hydroquinone 2,6-Dichloro-4-nitroaniline N-Cyanoethyl-hydroxyethyl aniline 3-Anilinopropionitrile |
EPA chemical information | Propanenitrile, 3-[[2-(acetyloxy)ethyl][4-[(2,6-dichloro-4-nitrophenyl)azo]phenyl]amino]- (5261-31-4) |
using 2, 6-dichloro-4-nitroaniline, acrylonitrile, ethylene oxide and acetic anhydride as raw materials, aniline and acrylonitrile are firstly cyanoethylated, then hydroxyethylated with ethylene oxide, and finally esterified with acetic anhydride to obtain coupling components; Then, 2, 6-dichloro-4-nitroaniline is diazotized, coupled with the coupling components, and filtered, ground and dried to obtain the finished product..
160kg of water, 1.3L of hydrochloric acid (30%), 372kg of aniline (100%), 26.5kg of acrylonitrile (100%) and 0.52kg of hydroquinone (99%) are heated to 80-90 ℃ for 32h, cooled to 80 ℃, 20kg of industrial refined salt is added for salting out, filtered, and dried to obtain N-cyanoethylaniline (II) 47-49kg (cyanoethylation can be reacted at 100-110 ℃ for 22h under a pressure of 0.1-0.13MPa, with a yield of 90%, better than the normal pressure method).
1 part (II) and 1.05 parts of ethylene oxide were taken and hydroxyethylated at 145-150 ℃ for 3h to obtain 121-123kg of product N-cyanoethyl-N-hydroxyethyl aniline (III).
Take 1 part (III), 2 parts of acetic anhydride and 10kg of sulfuric acid (98%), raise the temperature to 100-105 ℃ for esterification for 2h, reduce the temperature to 20 ℃, and dilute with 10kg of acetic acid to obtain acetylated compound (IV) of N-cyanoethyl-N-hydroxyethyl aniline.
Take 1 part of 2,6-dichloro-4-nitroaniline and 1 part of sodium nitrite for diazotization, and then couple with (IV) (diazotization and coupling reactions can be carried out in acetic acid medium to obtain good product quality, but the process is complicated (acetic acid needs to be recovered). If sulfuric acid medium is used, the coupling component (IV) cannot be excessive, otherwise the dye color light will dim) react for 2 hours, filter, and wash with water to neutral, dried dye.