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Sample preparation for Organic Solvent

Posted: Tue Jan 29, 2013 8:21 am
by lauric
Currently my lab is direct inject the organic solvent into GC without any sample preparation step. I do not know whether the sample is required to remove moisture or not.
If yes, anhydrous sodium sulfate is it sufficient enough?

Re: Sample preparation for Organic Solvent

Posted: Tue Jan 29, 2013 9:54 am
by Johnny Rod
What solvent and what are you trying to analyse for? If you're just QCing raw materials for %area then it's fine.

Re: Sample preparation for Organic Solvent

Posted: Wed Jan 30, 2013 12:42 am
by lauric
What solvent and what are you trying to analyse for? If you're just QCing raw materials for %area then it's fine.
ACETONE, BUTYL ACETATE, BUTYL CELLOSOLVE, CELLOSOLVE ACETATE, ETHYL ACETATE, HEXANE, ISO-BUTANOL, IPA, MIBK, MEK, METHANOL, N-BUTANOL, TOLUENE, XYLENE, DEA, DEG, MPG, MEA, MEG, MPA, TEG, ETHOXY PROPANOL, AMYL ACETATE,DIMETHYL FORMAMIRY,CYCLOHEXANE.

Yes i'm doing QC, our company is doing solvent repacking and blending.

Re: Sample preparation for Organic Solvent

Posted: Wed Jan 30, 2013 12:49 pm
by dblux_
ACETONE, BUTYL ACETATE, BUTYL CELLOSOLVE, CELLOSOLVE ACETATE, ETHYL ACETATE, HEXANE, ISO-BUTANOL, IPA, MIBK, MEK, METHANOL, N-BUTANOL, TOLUENE, XYLENE, DEA, DEG, MPG, MEA, MEG, MPA, TEG, ETHOXY PROPANOL, AMYL ACETATE,DIMETHYL FORMAMIRY,CYCLOHEXANE.
What's that ? Is it dimethylformamide ?

Re: Sample preparation for Organic Solvent

Posted: Thu Jan 31, 2013 1:53 am
by lauric
ACETONE, BUTYL ACETATE, BUTYL CELLOSOLVE, CELLOSOLVE ACETATE, ETHYL ACETATE, HEXANE, ISO-BUTANOL, IPA, MIBK, MEK, METHANOL, N-BUTANOL, TOLUENE, XYLENE, DEA, DEG, MPG, MEA, MEG, MPA, TEG, ETHOXY PROPANOL, AMYL ACETATE,DIMETHYL FORMAMIRY,CYCLOHEXANE.
What's that ? Is it dimethylformamide ?
Maybe...i not sure...i just take from the list in my lab

Re: Sample preparation for Organic Solvent

Posted: Thu Jan 31, 2013 4:05 pm
by dblux_
Maybe...i not sure...i just take from the list in my lab
Can't be anything else. :wink: