Disperse Blue 79

Synthesis of diazonium components: 2,4-dinitroaniline is used as raw material, and diazonium components are obtained by bromination. . Coupling component synthesis: Method 1: Take p-acetamido anisole as raw material, through nitration, reduction, hydroxyethylation and esterification. . Method 2: Using 2,4-dinitrochlorobenzene as raw material, it is prepared by alcoholysis, reduction, hydroxyethylation, reduction, esterification and acylation. . Dye synthesis: Diazotize the diazonium component and couple it with the coupling component to obtain the product. The product is obtained after filtering, grinding and drying. . After stirring and dissolving 32kg of acetaminophen and 160kg of 98% sulfuric acid in the nitration pot, add mixed acid (prepared from 24kg of 98% sulfuric acid and 84kg of 54% nitric acid), and carry out the nitration reaction below 5°C. Reaction 8- After 10 hours, 29 kg of 2-nitro-4-acetamido anisole (I) was obtained. Add 42kg (I), 200kg of water, 7kg of industrial hydrochloric acid, and 45kg of iron powder to the reduction pot, react at 90-100°C for 2h, and filter to obtain 27kg of reduced product (II). Add (II) 10kg (100%) and 10kg of water to the reaction pot, stir to dissolve, heat up to 80-100°C, add 4.8kg of ethylene oxide, react for 2h, and get dehydrated product. Then add 3 times the amount of acetic anhydride of the hydroxyethylated product (100%), raise the temperature to 105-110°C, and react for 3 hours to obtain the esterified product (ie coupling component) (III). Add 195kg of water, 19kg of bromine, 290kg of 2,4-dinitroaniline, and 0.6kg of chlorobenzene to the reaction pot, and carry out the bromination reaction at 50-55°C to the end. Obtain 2,4-dinitro-6-bromoaniline (ie diazo component) (IV). For dye synthesis, first use 42.3kg of 98% sulfuric acid and 4.7kg of sodium nitrite to dissolve at 70-80°C to produce nitrosyl sulfuric acid. Take (IV) 17.4 kg, 600 kg of acetic acid and prepared nitrosyl sulfuric acid for diazotization, and then couple with (III) 30 kg (100%), 280 kg of acetic acid, and 120 kg of water to obtain the product. After filtering, grinding and drying, the finished product is obtained.

Mainly used for dyeing polyester and its blended fabrics

Molecular Weight:639.4
XLogP3:3.5
Hydrogen Bond Donor Count:1
Hydrogen Bond Acceptor Count:13
Rotatable Bond Count:14
Exact Mass:638.09720
Monoisotopic Mass:638.09720
Topological Polar Surface Area:211
Heavy Atom Count:41
Complexity:940
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes