SALTS OF 1-(2-CHLOROETHYL)-5-NITRIMINOTETRAZOLE-NEW CANDIDATES FOR COLORING AGENTS IN PYROTECHNIC COMPOSITIONS

摘要

Alkaline and alkaline earth metal salts are widely used in pyrotechnic formulations as colorant agents. Sodium salts, for example Na_2C_2O_4, are inserted to yield a yellow flame color. Salts of lithium or strontium are responsible for a red one, barium salts, mostly Ba(NO_3)_2, for a green flame color and copper salts, only combined with a chlorine donor, are able to yield a blue flame color.Therefore, the lithium, sodium, potassium, calcium, strontium and barium salts of l-(2-chloroethyl)-5-nitriminotetrazole, diaqua copper(II) 1-(2-chloroethyl)-5-nitr-iminotetrazolate dihydrate and copper(II) 1-(2-chloroethyl)-5-nitriminotetrazolate were synthesized and characterized using vibrational and NMR spectroscopy, elemental analysis, and differential scanning calorimetry (DSC). Their sensitivities towards shock, friction, and electrostatic sparks were determined and the heats of formation were calculated using bomb calorimetric measurements. Crystal structures of three compounds have been determined by single crystal X-ray diffraction and a detailed description is given. Last but not least, all salts were tested with regard to their color performance.