نتایج جستجو برای: ethyl benzene
تعداد نتایج: 53205 فیلتر نتایج به سال:
The mol-ecule of the title compound, C(10)H(12)N(2)O(3), adopts a trans configuration with respect to the C=N bond. The dihedral angle between the benzene ring and the hydrazinecarboxyl-ate plane is 14.6 (1)°. Mol-ecules are linked into a three-dimensional network by O-H⋯O, N-H⋯O and C-H⋯O hydrogen bonds, and by C-H⋯π inter-actions.
The title compound PBPEA, C(10)H(7)Br(5)O(2), has its ethyl acetate portion nearly orthogonal to the benzene ring, with a C-C-C-C torsion angle of 88.3 (5)°. The packing involves an inter-molecular contact with a Br⋯Br distance of 3.491 (1) Å, having C-Br⋯Br angles of 173.4 (2) and 106.0 (2)°. The crystal studied was an inversion twin.
Received: 25 May, 2016; Accepted: 22 Aug , 2016 Background & Aims: Today use of unleaded gasoline is increasing in the world which contains abundant amount of aromatic organic carcinogenic compounds. This study aims to monitor the temporal and spatial concentration of BTEX volatile organic compounds and ozone formation potential (OFP) in the air of Yazd city. Materials & Methods: Thi...
Background and aims: Application of low heat devices was increased for infectious waste sterilizing in many hospitals in Iran. Studies have shown that the generation of volatile organic compounds (VOCs) and hazardous materials is most probable in the exhaust air of these devices. The main objective of this research is study of VOCs ( in the exhaust air from low heat sterilizer devices of four...
Introduction: In recent years, many national and international expert groups have considered specific improvements in risk assessment of chemical pollutants. This study considered to assess the risk of workers exposure to air pollutants in an automobile manufacturing in order to evaluate the health risk assessment due to the inhalation exposure. Material and Method: To perform this study, ...
A series of Y zeolites with different pore properties was prepared as a support for hydrocracking catalysts the production BTEX (benzene, toluene, ethyl-benzene, and xylene) from tetralin. Some important characterizations, including N2 adsorption–desorption, NH3-TPD, Py-IR, HRTEM, were applied to obtain catalysts. Meanwhile, tetralin performances those investigated on high-pressure fixed-bed mi...
In the title compound, C16H20O6, the conformation about the C=C double bond [1.344 (2) Å] is Z. With respect to this bond, the ketone is almost coplanar [C-C-C-O torsion angle = -179.60 (10)°] and the ester is almost perpendicular [C-C-C-O = 78.42 (13)°]. The meth-oxy substituents of the central benzene ring are either almost coplanar [C-C-O-C = 3.54 (15) and 177.70 (9)°] or perpendicular [C-C-...
Electrochemical methods, specifically square wave voltammetry (SWV) offer fast, portable, and quantitative screening for antioxidant levels lipid degradation in consumer products. Initial studies within our research group utilized benzene as the non-polar component solvent systems analysis. In order to explore additional applications of SWV, less hazardous that maintain or improve on previous f...
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