Colorimetric Determination of Hexahydro-1,3,5-trinitro-s-triazine and Octahydro-1,3,5,7-tetranitro-s-tetrazine in Admixtures

Determination of Binary Mixtures of Nitramines by aSpectrophotometric Method Using Partial Least SquaresMultivariate Calibration

“…The determination of cyclo-1,3,5-trimethylene-2,4,6-trinitramine (RDX) and cyclo-1,3,5,7-tetramethylene-2,4,6,8-tetranitramine (HMX) is dif®cult because of their close structural similarity (1) . The study of the mechanism of formation of the high explosive RDX in the nitrolysis of hexamethylenetetramine results in the discovery of a number of compounds with related structures which are possible intermediates and by-products in the reaction (2) .…”

“…Another method is based on the selective extraction of RDX by 1,2-dichloroethane which has been saturated with HMX. Although the method appears to be accurate with known mixtures, it is not speci®c and requires a 4 h extraction period (1,4) . RDX and HMX were determined by titrimetric methods with ferrous sulfate.…”

“…But the dependence of the amount of HNO 3 yielded from RDX on RDX concentration in 97.5% H 2 SO 4 and on the size of the RDX crystals are limiting this method (5) . A chromatographic (2) and an infrared method (1) have been described, but they are of limited use. So far the analysis of both RDX and HMX has mainly been accomplished by HPLC (6,7) .…”

Quantitative Spectrophotometric Determination of Hexahydro-1,3,5-Trinitro-s-Triazine in Octahydro-1,3,5,7-Tetranitro-s-Tetrazocine.

“…The salt-catalyzed acetylation of 2-methyl-2-propanol and 3methyl-3-pentanol was reported to be complete after 1-hour reaction at 100°C. by Schenk, Wines, and Majzis (6).…”

Surface-enhanced Raman spectroscopy combined with gold nanorods for the simultaneous quantification of nitramine energetic materials

“…64 HMX has been also detected especially with uorescence spectroscopy, 65 SERS, 60 mass spectroscopy, 63 nuclear quadrupole resonance, 66 and colorimetric techniques. 67,68 Many of these techniques require equipped substrate materials such as chips, 69,70 nanoparticles, 56,71 polymers 62 and lms. 72 Both of the procedures used in this work (i.e.…”