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] after recrystallization. A stock solution of formaldehyde was prepared from Merck “Pro Analisi” 35% formaldehyde solution and was standardized by the method of Kolthoff and Belcher [ 13 ]. A stock solution of carbonate free sodium hydroxide was also

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anhydrous Na 2 SO 4 . After removal of the solvent, the pure product was obtained. This was further purified by recrystallization with EtOH. All of the compounds are known compounds. The products were isolated and identified by comparison of their physical

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room temperature for 24 h. The reaction mixture was filtrated, separated and recrystallized to give a white crystalline product. Yield: 82%. The equation is as follows: 2 P) 2 N(cyclopentyl) and DMP were compounded with DMP): (Ph 2 P) 2 N

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redistillation or recrystallization. Triply distilled water was used for preparation of the solutions. Thiel, Schultz and Koch buffer [ 10 ], consisting of different volumes of 0.05 M oxalic acid, 0.02 M boric acid, 0.05 M succinic acid, 0.05 M sodium sulfate and

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leaching. At the same time, while Al atoms are removed and pores are formed, the recrystallization accompanied by pore plugging occurs. In this situation, the rate constant does not remain constant, and the rate constant is considered to vary inversely with

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filtered and dried. The crude acid obtained was recrystallized from hot water and the pure sample had a melting point of 61–62 °C. Tris(1,10-phenanthroline)iron(III) perchlorate [ 23 , 24 ] AnalaR grade ferrous ammonium

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recrystallized from water. Stock solutions of Cu(ClO 4 ) 2 and Ni(ClO 4 ) 2 have been prepared and were standardized by EDTA titration with murexide as indicator and a stock solution of sodium perchlorate was prepared and standardized gravimetrically. A stock

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Reaction Kinetics, Mechanisms and Catalysis
Authors: Min Chen, Yin-Yin Wu, Ying Luo, Min-Qiang He, Ji-Min Xie, Hua-Ming Li, and Xin-Hua Yuan

, then recrystallized from acetone to give the pure product as yellow sheet crystals. Qualitative and quantitative analyses were conducted by GC/MS (HP 6890), 1 H NMR (Bruker 2AR300) and FT-IR (Nexus 470). Results and

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Reaction Kinetics, Mechanisms and Catalysis
Authors: K. V. Novikova, M. O. Kompanets, O. V. Kushch, S. P. Kobzev, M. M. Khliestov, and I. O. Opeida

. Experimental N -hydroxyphthalimide was purchased from Fluka and used as received. Azodiisobutyronitrile (AIBN) and benzoyl peroxide (PB) were recrystallized from ethanol twice. Acetic acid was distilled over P 2 O 5 . Cumene was purified using

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: SDT Q600) was used for the kinetic studies. The TG was conducted under dynamic nitrogen flow rate of 100 ml/min. A platinum cup was used as the crucible material. Recrystallized alumina powder of 99.99% purity was used as the reference material. 17

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