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The perspective about ethyl acetate should be revisited. EtOAc is slightly soluble in water; not infinite (as e.g. ethanol), nor this little as hexane(s). It is greener than halogenated solvents such as dichloromethane, and the boiling point higher than the for dichloromethane or diethyl ether*) is an advantage during summer. Thus, EtOAc is an often used ...


3

At $\pu{25 ^\circ C}$ ($\pu{298.15 K}$), it is reported to be $\pu{(-12.06 ± 0.04) kJ mol-1}$ (Ref.1). Reference: S.J. Gill, I. Wadsö, "Flow-microcalorimetric techniques for solution of slightly soluble gases. Enthalpy of solution of oxygen in water at $\pu{298.15 K}$," J. Chem. Thermodyn. 1982, 14(10), 905-919 (https://doi.org/10.1016/0021-9614(...


2

Polyethylene (polythene, to some) may have plasticizers, such as adipates, terephthalates, or phthalates, but they are not inherently needed in all cases. Hopefully, the supplier of those alcohols does not bottle them in cntainers with plasticizers, but a wash bottle, purchased separately, might very well have them added to the plastic, particularly because ...


2

@ Joseph. If I were you I would start in advance by producing a regular vertical flame (nearly colorless) with a methane or propane or butane burner. A big stable flame, as long as possible. And then, just when you want the rest of the world know the signal, I would spray an aqueous solution of lithium chloride or of copper chloride horizontally through the ...


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A single solvent? Probably not. Different elements have dramatically differing solubilities in most solvents, and so you would have to tune the solvent to the element at least to some extent. However, for the specific task of identifying a solvent that would (a) burn and (b) dissolve chemicals suitable for giving either a blue/green color or a pink/violet ...


1

(S)-(-)-$\alpha,\alpha$-Diphenyl-2-pyrrolidinemethanol is a chiral ligand, which is commercially available (e.g., for $\pu{53.00 USD}$/$\pu{5 g}$ from Spectrum; Manufacturer: TCI). That is much cheaper price compared to other vendors and the trouble preparing it (assuming this is not the project you are assigned for). To be honest, I didn't have experience ...


1

I realise this post is over 2 years old but since nobody had mentioned this I'm gonna add it here for any future readers. DCM (DichloroMethane) is a solvent for PLA and PLA+. I realise not everyone has access to it, but for those who do, it is great for solvent-welding of PLA parts. it dissolves PLA almost instantly and produces a seamless and clean weld ...


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