3-[ethyl[4-[(6-nitrobenzothiazol-2-yl)azo]phenyl]amino]propiononitrile

Blue light red powder.

Using 6-nitro-2-aminobenzothiazole and N-ethyl-N-cyanoethyl aniline as raw materials, first diazotize the former, and then couple with N-ethyl-N-cyanoethyl aniline to obtain the product . After filtering, grinding and drying, the finished product is obtained. . Add 120kg of sulfuric acid and 9.9kg of 6-nitro-2-aminobenzothiazole into the reactor, and raise the temperature to 70°C to complete dissolution. Then, the temperature was lowered to 0°C, and 7kg of nitrosyl sulfuric acid was added dropwise within 30 minutes. After the addition, the temperature was kept for 2 hours until the end point to decompose the excess sodium nitrite to obtain the diazonium liquid. Add 300kg of water and 24.1kg of N-ethyl-N-(β-cyanoethyl)aniline (40% solution) to the coupling kettle, stir at room temperature until it is fully dissolved, then cool to 0-5°C, add diazonium liquid After adding in about 30min, continue to react to the end. Filter, wash with water until neutral, and dry to obtain 13kg of dye.

Disperse Red 2BL-S is mainly used for polyester dyeing, suitable for high temperature and high pressure method and hot melt method. Bright color, excellent performance and high strength. It is also used for printing polyester fabrics and blending black dye-dispersed black 2B-SF with disperse orange R-SF, disperse yellow brown S-3RFL, and disperse blue 2G-SF.

Molecular Weight:380.4
XLogP3:4.5
Hydrogen Bond Acceptor Count:8
Rotatable Bond Count:6
Exact Mass:380.10554495
Monoisotopic Mass:380.10554495
Topological Polar Surface Area:139
Heavy Atom Count:27
Complexity:580
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes