Quality and Performance Characteristics

N-Methylaniline from Chlorobenzene and Methylamine

“…of aromatic amines as additives for high octane aviation gasoline {1, 2, 4, 8) has encouraged research on improved methods for their large-scale production (3,9,12). This paper presents the results of a bench-scale study to find a continuous process for economic manufacture of A-methylaniline.…”

Process Development

“…This paper relates the work necessary to the development of a high pressure hydrogenation process for conversion of nitroxylenes to xylidines and the application of this process to the existing large scale hydrogenation plant at Baton Rouge. A companion paper (5) presents the results of studies conducted to evaluate the quality and performance characteristics of the xylidines produced by this process.…”

“…Vacuum distillation prior to hydrogenation would be expected to provide the ultimate in nitroxylene quality and tend to remove a majority of the dinitroxylenes always present. On hydrogenation, dinitroxylenes form aromatic diamines which tend to contribute to color instability of the final amine product (5). Because of limited stability data on nitroxylenes and particularly dinitroxylenes, vacuum distillation was considered as potentially hazardous and therefore was investigated in only a preliminary manner.…”