2-Methyl-4-nitrobenzenediazonium

Brown Crystalline Solid

Using o-toluidine as raw material, first react with benzenesulfonyl chloride (or p-toluenesulfonyl chloride) to obtain N-benzenesulfonyl o-toluidine (or N-p-toluidinesulfonyl o-toluidine), and then obtain the product through nitration and hydrolysis. . Add 440kg of chlorobenzene, 10.5kg of 100% nitric acid (with 63%) and 6kg of water into the nitrification pot. Heat to 30°C. Add 0.5kg of sodium nitrite, and then add 225kg of N-benzenesulfonyl o-toluidine and 48.5kg of 100% nitric acid (63%) within 2-2.5h. The nitric acid is added slightly first. The reaction temperature was gradually increased to about 40°C, heated to 50°C, kept for 1 hour, and then cooled to 15°C. The material liquid was filtered quickly under reduced pressure, and the filter cake was washed twice with chlorobenzene, 100L chlorobenzene each time, and then washed with water to neutrality (the chlorobenzene was recovered after the filtrate and the washing liquid were combined). The filter cake is dried for later use. Add 450kg of 95% sulfuric acid and 10kg of water to the hydrolysis pot, and add 450kg of the above-mentioned nitration product within 2h. Keep the hydrolysis temperature not exceeding 60℃ (cooling required). After the addition, continue to keep at 60℃ for 1h until a clear solution is obtained. Hydraulic pressure the material into the precipitation tank, 6600L of water and 228kg of sodium hydroxide (100%) have been placed in the tank, stirred for 5h, 4-nitro-o-toluidine precipitated out, filtered, washed with water to neutrality, vacuum dried at 95℃, The finished product is crushed to a size of 2mm.

The red base RL is mainly used for dyeing cotton, viscose fiber, silk and printing of fabrics. Coupling with Naphthol AS-OL dyes red, strong coupling ability, medium coupling speed.

Molecular Weight:164.14
XLogP3:2.8
Hydrogen Bond Acceptor Count:3
Exact Mass:164.046001443
Monoisotopic Mass:164.046001443
Topological Polar Surface Area:74
Heavy Atom Count:12
Formal Charge:1
Complexity:227
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes