using a 25 ml flask...need some help

[stevowitz]

I took some of my off-white spice & put it into a tiny 25ml flask(small neck, wide base) & then added my solvent & heated under hot tap, cooled, etc...now I need to figure out how to get my results out of the bottom of the flask...any ideas?

looks like this:

http://www.interlab.com.tr/resim/urun/buyuk/26.jpg

 

[geeg30]

You could add some more solvent (enough to dissolve all spice) and pour into an evaporating tray and leave to evaporate. It shouldn't take too long.

You should use naptha as the solvent as it picks up most of the spice and leaves the oxides etc behind.

 

[Infundibulum]

...or use a solvent like acetone, IPA, ethanol or methanol to dissolve the spice and get it out. These solvents evaporate pretty fast and dissolve the spice extremely well.

now, why on earth did you use these flasks?:? they cry out for difficult retrievals! the only advantage is that they look cool!

 

[benzyme]

get some dcm or chloroform, I can't stress this enough..spice is most soluble in them
once you get it out, then you can recrystallize with something else.

volumetric flasks definitely look cool, but they're primarily for making serial dilutions of standards.

 

[stevowitz]

thank you all! I just happened to find it layin around and wanted to geek out I guess..heh

But it does serve a purpose: saturating my solvent with spice! I can roll it around under warm tap perfectly(thanks geeg30) then evap/precipitate in a dish.

love the quick responses here