ZoSo357 Posted December 16, 2006 Share Posted December 16, 2006 I was wondering if there was a way to test to find out the percentage of MEK in my pvc primer. The label only lists "tetrahydrofuran, methyl ethyl ketone, cyclohexanone" But it's purple so I know it most likely contains red and violet dyes. Many of the MSDS sheets i found for different primers contain as much as 70% MEK, where as some contain about 15%. Others contain about 40%. I couldn't find any information on the specific brand of primer I have. (It's called VC 180 primer) As much as it doesn't say acetone on the can, it also doesn't say it contains dye's (like many of the other primers) so I'm not sure what to believe. The smell of it is a sort of sweet smell. It does remind me of the smell of acetone, but I'm not sure what pure MEK smells like, so for all I know it could mainly be MEK. Any help would be appreciated. Thanks in advance. Link to comment Share on other sites More sharing options...
DeAdFX Posted December 16, 2006 Share Posted December 16, 2006 The best way to determine what % of stuff you have is to distill it... I encounter the same issues when I research MSDS sheets for various consumer products. The manufacturer does not provide exact % because the mixture is probably a family secret or propietary(sp). Link to comment Share on other sites More sharing options...
ZoSo357 Posted December 17, 2006 Author Share Posted December 17, 2006 Which of the products would i excpect to distill out of the mixture? The acetone or the MEK? Link to comment Share on other sites More sharing options...
DeAdFX Posted December 17, 2006 Share Posted December 17, 2006 Well I believe whatever component of the pvc mix that has the lowest boiling point. Acetone should distill first because if I remember correctly its bP is around 60C MEK is a few degrees higher(~80c) Link to comment Share on other sites More sharing options...
ZoSo357 Posted December 17, 2006 Author Share Posted December 17, 2006 Thanks for the help. Now if i could just require the proper distill... I have some basic "glassware" that i use, but most of it is just glass that i found at different stores that looked suitable for certain purposes. Link to comment Share on other sites More sharing options...
Recommended Posts