METHOD FOR CONCEALED MARKING OF EXPLOSIVE SUBSTANCES (VERSIONS) Russian patent published in 2017 - IPC C06B23/00 G01N33/22 

FIELD: chemistry.

SUBSTANCE: invention relates to a chemical method of marking and identifying explosive substances (ES), as well as forensic identification of preparations, which can be used in investigation, expert forensic and legal practice. Method for concealed marking of explosives comprises introducing into an explosive, obtained by mixing certain components, a marking composition containing identifiers, number which is proportional to number of technical parameters, to be marked. Each identifier corresponding to a separate property used is a combination of substances (at least two substances), with available detection of fluorescence. Substances can be moulded into separate sets (units), and information (an a unit) is recorded in a binary code with arrangement of substances when detecting on a spectrogram successively built into circuit in accordance with a scale of capacity of units of a binary code. Marking composition is composed of separate sets (units), each of which by a separate stream is fed into an explosive while mixing latter from separate components.

EFFECT: method enables to encode data on an explosive substance, provides high security of marking explosive and reliability of identification of explosive based on its marking when reading a graphical recording of latter.

6 cl, 3 dwg, 4 tbl, 1 ex