For making Deep eutectic solvent of choline chloride and ethylene glycol in 1:2 molar ratio how much quantity of cholin chloride and ethylene glycol has to be taken ?
Dear Rajni Kumari, pleinty of studies on such a conventional DES combination are available. Please have a look at the following sample references. My Regards
https://doi.org/10.1021/acs.jced.9b01113
https://doi.org/10.1021/acs.jced.9b01113
https://doi.org/10.1016/j.tca.2012.09.041
https://doi.org/10.1016/j.jiec.2018.12.006
https://doi.org/10.1039/D1CP05010A
To make a deep eutectic solvent (DES) of choline chloride and ethylene glycol in a 1:2 molar ratio, we first need to calculate the number of moles of each component required, and then use their molecular weights to determine the quantities needed in grams.
The molecular weight of choline chloride is 139.62 g/mol, and the molecular weight of ethylene glycol is 62.07 g/mol.
To make a 1:2 molar ratio of choline chloride to ethylene glycol, we need twice as many moles of ethylene glycol as choline chloride. Let's assume we want to make 100 g of DES:
1 mole of choline chloride : 2 moles of ethylene glycol x moles of choline chloride : 2x moles of ethylene glycol
Since we want a 1:2 molar ratio, we can assume that the number of moles of choline chloride is x, and the number of moles of ethylene glycol is 2x.
x + 2x = 3x
Mass of choline chloride = (x / 3x) * 100 g = (1/3) * 100 g = 33.33 g Mass of ethylene glycol = (2x / 3x) * 100 g = (2/3) * 100 g = 66.67 g
Therefore, to make a deep eutectic solvent of choline chloride and ethylene glycol in a 1:2 molar ratio, we need to take 33.33 g of choline chloride and 66.67 g of ethylene glycol.
Amirmahdi Tavassoli ethylene glycol is in liquid form, how could i take liquid in gram...?
Dear Rajni Kumari, to take liquid ethylene glycol in grams, you would need to measure its weight using a scale that is capable of measuring in grams.
Here are the steps to do so:
It is important to handle ethylene glycol with care as it is toxic and can be harmful if ingested or if it comes into contact with skin or eyes. It is recommended to wear protective gloves and eyewear and work in a well-ventilated area when handling this chemical.
If you you want to use volume instead of mass, then use the equation:
volumic mass (density)=mass/volume
The density is given on the technical information on the bottle of EG.
Other thing to take care about is the degree of purity. The mass to be taken is the calculated one divided by the %purity. For example you want to take 100g of 90% pure EG, then you should take m=100/0.9, i.e., m=111.11g. I think the difference is clear.
It is important to know that DES calculations are made using the molecular weight of the compound.
The molecular weight of choline chloride is 139.62g/mol while Ethylene glycol is 62.07g.
Using this formular (X/Nx.Mx) = (Y/Ny.My)
Where X is mass of choline chloride to be weighed, Nx is number of moles of choline chloride, Mx is molecular weight of choline chloride.
Y is mass of ethylene glycol to be weighed, Ny is number of moles of ethylene glycol, My is molecular weight of ethylene glycol.
Assuming you want to weigh 5g of choline chloride, using the above equation, you will need 4.45g of ethylene glycol to formulate a mixture of 1:2 ratio.
I hope this helps.
Lis it possible to know exact molar mass of DES after mixing(choline chloride and urea) 1:2 ratio?
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