Benzene, Toluene, Ethyl Benzene and Xylene are volatile organic compounds (VOCs) with approximately similar physical and chemical characteristics. Benzene and Ethyl-benzene are known carcinogen as well as they affect the circulatory, nervous, and reproductive and respiratory systems. Toluene and Xylene also damage the nervous and reproductive systems. The main purpose of this study is to determ...

background: volatile organic compounds (vocs), including carcinogens and toxic compounds, are produced in petrochemical industries. we undertook this study in order to study workers’ respiratory exposure to different voc concentrations and compare the results with the urinary levels of its metabolites and study the correlation between them in petrochemical industries. materials and methods: exp...

We have measured the temperature dependence of the proton spin-lattice relaxation rate R at 8.50 and 22.5 MHz in solid 1,3,5-tri-ethyl-benzene and solid 1,2,4-tri-ethyl-benzene. Analysis of the data strongly suggests that we are studying amorphous states in these slowly solidified organic solids (that are liquids at room temperature). The ethyl groups are static on the Larmor frequency timescal...

In the title mol-ecule, C(24)H(20)N(2), the pyrazine ring is significantly distorted from planarity, presumably due to steric crowding, and its conformation is well described as a flattened twist-boat. The benzene ring adjacent to the ethyl group forms dihedral angles of 53.79 (13) and 85.47 (12)° with the other benzene rings; the dihedral angle between adjacent benzene rings is 57.90 (12)°. Th...

In the title compound, C(11)H(17)ClNO(+)·Cl(-), the side chain of the ethyl-amine group is orientated approximately perpendicular to the benzene ring, the dihedral angle between the C/C/N plane of the ethyl-amine group and the benzene plane being 83.5 (3)°. In the crystal structure, inter-molecular O-H⋯Cl and N-H⋯Cl hydrogen bonds are observed. The crystal studied was an inversion twin with a 0...

In the title compound, C(11)H(17)ClNO(+)·NO(3) (-), the side chain of the ethyl-ammonium group is orientated approximately perpendicular to the benzene ring, the dihedral angle between the C/C/N plane of the ethyl-ammonium group and the benzene ring being 79.40 (18)°. In the crystal structure, inter-molecular O-H⋯O and N-H⋯O hydrogen bonds are observed between the cation and the anion.

Research on compounds from liquid smoke resulting the pyrolysis of used tire waste has been conducted. The results produce hydrocarbons and charcoal which can be utilized developed into more useful materials or finished goods. This study aims to identify compound components waste. research begins with manufacturing a tool based principle dry distillation. process is carried out by heating at hi...