نتایج جستجو برای: benzoyl peroxide

تعداد نتایج: 35401  

2009
Ankush Gupta Monica Gulati Narendra Kumar Pandey

A simple, sensitive, spectrophotometric method in UV region has been developed for the simultaneous estimation of benzoyl peroxide and tretinoin in bulk and semi solid dosage form (cream). Standard solution of benzoyl peroxide shows maximum absorbance at 234.8 nm and tretinoin shows maximum absorbance at 348.6 nm. Beer’s Lamberts law is obeyed in concentration range 1-9 μg/ml for tretinoin with...

Journal: : 2021

This article represents data on the effect of organometallic iron complexes: ferrocene, dicarbonyl dimer cyclopentadienyl and tricarbonyl cyclooctatetraene copolymerization methyl methacrylate (MMA) acrylonitrile (AN) initiated by benzoyl peroxide. It is shown that introduction metal complexes their structure affect initial rate copolymerization, form diagrams composition obtained copolymers, v...

Journal: :Organic chemistry frontiers 2021

Roll over transition metals-triarylamines are redox-catalysts, enabling olefin difunctionalization and C–H functionalization reactions by activating benzoyl peroxide.

Oxidation of different types of 1,4-dihydropyridines with diphenylpicrylhydrazyl (DPP) and benzoyl peroxide (Bz2O2) as free radical oxidizing agents to pyridine derivatives is reported and a mechanism for this oxidation is also proposed.

Journal: :journal of sciences islamic republic of iran 0

oxidation of different types of 1,4-dihydropyridines with diphenylpicrylhydrazyl (dpp) and benzoyl peroxide (bz2o2) as free radical oxidizing agents to pyridine derivatives is reported and a mechanism for this oxidation is also proposed.

Journal: :Cochrane Database of Systematic Reviews 2020

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2003
Federico Martínez Ramos Manuel Soriano-García Gerardo Aguirre Hernández

C14H10O2Se2 is monoclinic, P2(1)/c. The unit-cell dimensions at 293 K are a = 12.795(2), b = 12.126(2), c = 9.0179(13)A, beta = 107.074(6)degrees, V = 1337.5(3)A3, and Z = 4. The R value is 0.048 for 2319 observed reflections. The dihedral angle between the plane C4-C7(O2)-Se1 and C9-C8(O1)-Se2 is 85.6(2)degrees, keeping the Se atom unshared electron pairs in a more stable configuration with th...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 1997
rouhallah bagheri faranak naimian nassrin sheikh

acrylamide was grafted in low density polyethylene during melt processing in the presence of a free radical initiator using a torque rheometer in a closed system. effects of processing time, acrylamide and benzoyl peroxide concentrations were studied. ftir studies revealed that the degree of grafting increased by an increase in acrylamide concentration. maximum grafting was obtained at 7 minute...

Journal: :Journal of dairy science 2010
E J Kang R E Campbell E Bastian M A Drake

Annatto is a yellow/orange colorant that is widely used in the food industry, particularly in the dairy industry. Annatto, consisting of the carotenoids bixin and norbixin, is most commonly added to produce orange cheese, such as Cheddar, to achieve a consistent color over seasonal changes. This colorant is not all retained in the cheese, and thus a percentage remains in the whey, which is high...

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