i need to do folin test for detection the presence of phenolic compound do i need to drying the sample by rotary evaporator then re-dissolving it in the same solvent?
i try to prepare 3 %wt of ethnaolamine ? i will take 3 ml of 99% pure 98% ethanolamine ? what solvent used to put 3 ml in it?
01 February 2019 1,547 3 View
i try to synthesis nano particles using green synthesis but the temperature surround 100 C and i notify the color change which indicate the nanopaticles formation but i read in the literature...
01 February 2019 7,167 7 View
what is the refractive index of benzyl alcohol 99%? i will measure the sample through zeta sizer but the solvent did not exit in the library of the machine?
01 February 2019 6,446 4 View
i have this spectrum but i think the peaks look wrong??? can any one help to investigate this? plus i should get spectrum on 265 nm ? is this consider near ?
01 February 2019 8,403 1 View
i try to synthesize platinum nano particles from hexacholoplatinumic acid with plant extract? it should change the color after few minutes from pale yellow to brown ? but with no change in...
31 December 2018 8,493 11 View
Salami doctors i will synthesis platinum nanopartcles using green synthesis but i try to put to of them on each other with no change of color i read in literature that using of surfactant is...
31 December 2018 6,211 6 View
i have plant extract and i dried it and get mass in gram after evaporation the solvent, now i want to synthesize metallic nano particles but how much mass in g, mg should dissolve in which solvent...
11 December 2018 6,688 3 View
salami researcher i dissolve 100 mg of plant extract in 5 ml of distilled water what is the dilution factor? thanks
10 November 2018 8,792 4 View
i will try to dissolve 1 mg of plant extract have phenolic compounds for Folin test in 10 ml of methanol? but i don't sure if this solvent will dissolve the extract because i used different...
09 October 2018 3,298 4 View
i will try to drying plant extract using rotary evaporator and i will get weight but to how much i should diluted the sample after drying how i can calculate the dilution factor and what i should...
09 October 2018 5,918 12 View
I am making polymer composite by solvent mixing method. When I am trying to add filler solution in polymer solution it quickly get solidified. How to make them then uinform? It doesn't give time...
03 March 2021 7,540 4 View
I looking for ferro calcium production process
03 March 2021 1,755 4 View
I am try to make the Paal Knorr reaction between 2.5 hexnedione and 6-amino hexanoic acid, my problem is type of solvent to use, because 6-hexaminohexanoic acid is soluble in water but I am not...
02 March 2021 4,443 2 View
I want to polymerize TEOS on a surface. I know that NH4OH is a preferred catalyst and an alcoholic solvent should be used .But I can not find certain amounts of each material to use. Does any one...
02 March 2021 1,404 6 View
I need a procedure to extract the ciprofloxacin hydrochloride from aqueous solution by using dichloromethane in detail,. I thank you very much.
01 March 2021 4,306 1 View
I am currently doing my third year design project. I have been assigned to design a glycerol recovery column in vinyl acetate monomer production. The process unit before the recovery column is an...
01 March 2021 9,525 4 View
28 February 2021 8,466 2 View
The reaction of APTES with salicylaldehyde in ethanol leads to the formation of imine compound yellow solid which is mention in literature, but I am not getting yellow solid I don't know why? when...
28 February 2021 2,955 2 View
there are solvents and alcohol in the waste water of a factory that produces disinfectants. Increasing this waste water requires very serious operations. Can I treat this waste water with...
27 February 2021 2,609 3 View
There is huge pressure of getting good impact factor on scholars now a days. On the other hand Taxonomy is a very dry subject and the concerned papers can only get citation in same group of organism.
26 February 2021 5,851 1 View