Abstract: A new analytical method was proposed for the separation of diamino -, aminonitrotoluene isomers and mixed explosive ingredients containing di- , and trinitrotoluene, dibutylphthalate and steric acid. A capillary column coated with SE - 30 was used for the separation of components of explosives mentioned above. Five aminonitrotoluene isomers were successively separated on the SE - 30 column or a capillary column coated with SE -54. The iused silica capillary columns coated with two kinds of side - chain liquid crystalline siloxanes proved very suitable for the separation of di - aminotoluene isomers and monochlorotoluene isomers.