Product name:N-Methylaniline
Synonyms:MONOMETHYLANILINE;N-METHYLANILINE;N-METHYLAMINOBENZENE;N-MONOMETHYLANILINE;(Methylamino)benzene;Benzenamine, N-methyl-;Benzenenamine, N-methyl-;methylaniline(non-specificname)
CAS:100-61-8
Formula:C7H9N
Molecular weight:107.15
Melting point:−57 °C(lit.)
Boiling point:196 °C(lit.)
Density:0.989 g/mL at 25 °C(lit.)
Refractive index:n20/D 1.571(lit.)
Flash point:174 °F
Water solubility:30 g/L
Merck:14,6019
BRN:741982
Stability:Stability Combustible. Incompatible with strong oxidizing agents. Discolours upon exposure to air.
Package: 200kg/drum
Purity:99%min
Chemical properties: Colorless to pale yellow oily liquid. Slightly soluble in water, soluble in alcohol, ether, chloroform.
Usage:
1. Used as dye intermediates
2. N-methyl aniline is both a pesticide buprofezin raw materials for the synthesis of its intermediate N-chloromethyl N-phenylcarbamoyl chloride, is also an herbicide thiophene amide intermediates, in addition to More for the dye industry.
3. The product for organic synthesis intermediates, acid absorber and solvent, dye industry for cationic red FG, cationic pink B, active yellow brown KGR and other production.
4. N-methyl aniline for organic synthesis intermediates, acid absorbers and solvents, dye industry for cationic red FG, cationic pink B, yellow-brown KGR activity, such as the production.
Brief manufacture process:
Aniline and methanol to form crude N-methylaniline under the action of copper-zinc-chromium catalyst and then distilling off methanol, water, aniline and N, N-dimethylaniline to obtain crude N-methylaniline and then vacuum distillation to obtain product.
Aniline and dimethyl sulfate reaction.
Dimethyl sulphate was added dropwise to a mixture of aniline and water at a temperature below 10 ° C. After stirring for 1 h, 30% sodium hydroxide solution was added dropwise. The mixture of aniline, N-methylaniline and N, N-dimethylaniline is obtained by combining the organic phase with the oil obtained by recovering the benzene from the extract. Treatment of the mixture with sulfuric acid, so that aniline sulfate formation filter out. N, N-dimethylaniline can be converted to N-methylaniline by the following reaction.