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Thiol Standards GC/MS

Posted: Tue Apr 10, 2012 4:39 pm
by m.finnBMBM
Hello all,
I have been searching for a gc/ms standard of thiol esters (which includes methyl mercaptan, ethyl mercaptan, etc). Restek said they did not have the proper ventilation to make a custom standard that included all the chemicals I am interested in. What is another good place to look?
Thank you.

Re: Thiol Standards GC/MS

Posted: Wed Apr 11, 2012 12:39 pm
by JI2002
I'm confused about the term you use. Methyl mercaptan and ethyl mercaptan are esters? The sulfur compounds standard is a gas mixture, not liquid mixture.

Re: Thiol Standards GC/MS

Posted: Wed Apr 11, 2012 2:15 pm
by AICMM
m.finnBMBM,

JI2002 raises a good point about the methyl mercaptan being a gas.

You might try ISGAS or DCG out of Houston. Either of them can probably provide what you are interested in.

Best regards,

AICMM

Re: Thiol Standards GC/MS

Posted: Mon Apr 23, 2012 11:38 pm
by m.finnBMBM
Thank you. I've sent out some inquiries. I am also having trouble figuring out how to find these compounds in a sample. I want to see if there is any methyl mercaptan in a sample that contains a lot of methanol. What would be the best way to see if there are any mercaptans present? SPE, methylene chloride extraction? All under very cold conditions, of course.