Separation of n-methylethylenediamine from EDA-containing mixtures

A process for producing ethylenediamine (EDA) from a mixture comprising water (H2O), EDA and N-methylethylenediamine (NMEDA) by feeding the mixture into a rectification column, wherein the rectification column is operated at the top pressure in the range of 5.0 to 7.5 bar and the weight ratio EDA to NMEDA in the mixture comprising water (H2O), ethylenediamine (EDA) and N-methylethylenediamine (NMEDA) fed into the rectification column is 1:0.0005 to 1:0.2.