Unfortunately, I don’t know what it is- only that local stores in Northern Illinois have been eliminating MEK from their sale to consumers since January of this year.
http://model-railroad-hobbyist.com/node/7063
has this forum comment, quote:
"Sun, 2012-02-12 22:00 — LKandO
Ethyl Acetate and Acetic acid (vinegar)
MSDS here:
http://infohouse.p2ric.org/ref/02/01687.htm
Alan
www.LKOrailroad.com
I posted a thread about my search for MEK
( hopefully this link will work correctly)
" MEK Substitute "?!
http://cs.finescale.com/fsm/general_discussion/f/9/t/144208.aspx
Fortunately, I was able to buy MEK from Lowes at clearance and never needed to try the substitute.
HawkeyeHobbies mentioned Weld-On #3 as a possible substitute