Shouldn't SHE be doing her own dishes, Renster my dear?
As for me, might get it done today if I end up feeling like it. But a certain nitroalkene has been given it's first recystallization from isopropanol, and crashed with H2O (its insoluble in water, the compound in question, which shall remain nameless), has been precipitating out over several days, going from yellow powder, (its supposed to be yellow, though) to translucently yellow fine acicular, hair-thin needle like crystals, although a couple of spots of oxidation from being in solution exposed to the air have formed nevertheless. Not a major issue though, only slight discolouration due to impurity formation. But considering that was just the first recrystallization, in a series of several I'll perform on the material in question, I'll take a melting point test in a microcapillary tube, strapped to a thermometer with a rubber band and immersed in the oil filling of my Thiele tube (a glassware device for accurately measuring the melting point of a sample, a few milligrams being sealed inside a length of fine-bored glass capillary tube, the melting point being compared with known values for the material, the sharpness of the MP, or whether its a range, etc. all giving indications as to the purity of the material tested, running each sample in triplicate, and using that as a range to narrow the margin of error further still)
So a little impurity formation while it crystallized, that'll all be made to go away during successive bouts of recrystallization. Just a pet project of mine, plus another, smaller quantity of another material also needs to be recrystallized, as its discoloured somewhat in storage. Might turn it from the freebase of the second compound, a secondary amine, to a more storage-stable hydrochloride salt, and just prepare the freebase via acid-base extraction as and when I need it. That needs a couple of recrystallizations, solvent washes and the likes too.
