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Questions related from Wael Khalil El- Tramsey
I search for an alternative material for pectin with similar or near binding properties in food industries particularly jam.
23 February 2023 7,623 7 View
We do a treatment for sesame seeds in order to separate the crust(cake) of sesame seeds and get the core to be ground to get tahini. the question now I have a large quantity of this crust and I...
19 December 2022 9,290 0 View
I will pepare denatonium benzoate and denatonium saccharide from lidocaine and benzyl chloride I need to know more safety precuations during preparation or any health problems on exposure to the...
04 January 2022 3,250 1 View
I need to know the method and conditions to transform 3,5- dinitrosalicylic acid to 3,5-dinitrosalicylaldhyde?
02 March 2019 757 0 View
In the reaction of aniline and 3,5-Dinitrosalicylic acid what is the product amide or CT complex and why?
03 February 2019 3,138 0 View
I have prepared a chemical compound and I need to do recrystalyzation for purification, I tried many solvents like dust. water, benzene, chloroform, ethanol, cyclohexan... It is soluble in all...
23 December 2018 2,342 4 View
I had done ESR analysis for cupper polymer complex, I calculated g parallel and g perpendicular, both are more than 2.3 g11=2.42 g(perpendicular)= 2.77 G= 0.54 g av. 2.65
26 May 2015 4,711 4 View
first: I had extracted a natural polysaccharide polymer, how can I know it is (1,4) or (1,6). second: I had prepared complexes with this polysaccharide and transition metal ions, How can I know...
09 August 2014 4,736 5 View