CHEMICAL PROBLEMS
SYNTHESIS OF CHLORCONTAINING ETHERS ON THE BASIS OF DIOXANE AND CYCLOHEXENE
QUESTIONS OF GAZ-LIQUID CHROMATOGRAPHY. IX DEFINITION LOW-MOLECULAR ALIPHATIC CARBONYL COMPOUND CONNECTIONS BY MEANS OF THE CHROMATOGRAPHIC ANALYSIS
A new gas chromatograph column combining the carrier of chromosorb-B and motionless phase dibutyl phthalate, has been offered to enable a full separation of air-gas mix containing hydrocarbons with carbonyl functional group and obtaining of chromatograms with accurate peaks. Thanks to the given column, nitrogen, oxygen and products of combustion of organic substances – carbon […]
HALOGENATION OF BENZENE DERIVATIVES WITH ELECTRON-ACCEPTOR SUBSTITUENTS IN TERMS OF INDUCING ELECTROFILIC CHLORINE AND BROMINE
Reaction of halogenation of aromatic compound containing electron-acceptor substituents in chlorine- and bromine inducing system has been studied. It established that electrofilic substitution of hydrogen atoms by chlorine or bromine in benzene nucleus proceeds as in the case of aromatic compounds with electron-donor substituents.
CYCLIC NITROALKANS AS ANTIMICROBIAL ADDITIVES TO FUELS
The synthesis of cyclic nitroalkans by reaction of tetrafluoroborate of nitronium with cycloolefins in the solution of sulphuric anhydride of -30÷ – 40oC has been corried out.The structure of synthesized compounds proved by IR- and NMR 1H spectroscopic metods.It revealed that synthesized compounds have antimicrobial properties in concentration 0.1-0.0001%.
DEVELOPMENT, ACHIEVEMENTS AND PROSPECTS OF CATALYTIC CRACKING PROCESS IN AZERBAIJAN
The article provides information about development, achievements and prospects of the process of catalytic cracking in Azerbaijan.
SOME ASPECTS OF THE FILTRATION PROCESS OF SUSPENSION OF LIQUID SULPHUR UNDER PRESSURE
The sequence, including the mechanism of formation of the filtering layer in the process of filtration of suspension of liquid sulphur, carried out with the purpose of obtaining liquid sulphur of required purity. On the basis of the industrial data, duration of the filtration and volume of filtrate in one cycle of the filter working […]
ANALYSIS OF THE PHENOTHIAZINE REACTION WITH 1,2-EPOXY-3-CHLORPROPANE
FLAVONOIDS OF CEPHALARIA VELUTINA, AZERBAIJAN FLORA CASE STUDY
Flavonoids of Cephalaria velutina have been studied. Flavonoids – luteolin, kversetin and gigantozid A identified.
IMPACT OF Υ-IRRADIATION ON PHYSICAL-CHEMICAL PROPERTIES OF POLYCHLORINOBIPHENYL (PCB) OILS
The work retraces influence of ¡-irradiation on changes of electrophysical characteristics and physical-chemical properties of polychlorobiphenil-containing transformer oil. It revealed that low doses of irradiation lead to sewing molecular units of oil together and thus raise its viscosity and density. High doses of irradiation break inter-chain bonds in oil ands thus decrease its viscosity.