Bunny suits?! That seems a bit over-the-top unless this was an application where you were spraying large quantities (several liters) into the air. I obviously have not done independent research on this - I am only going by what I've read in MSDS and other published sources that I read before using these chemicals. The US Centers for Disease Control lists the IDLH (Immediately Dangerous to Life or Health) threshold at 500ppm for both benzene and toluene but they allow up to 100ppm permissible exposure level in the workplace for toluene but only 1 ppm for benzene. They also do not mention any risk of cancer for toluene but they do for benzene. So, I'm not saying that toluene is just dandy and no precautions are needed, but rather that it is considerably safer than its "parent" molecule benzene for long-term exposure. I also just learned that toluene is a significant risk to pregnant women with regard to possible miscarriage so I guess it can be very nasty for some people. Sean On Fri, Dec 8, 2017 at 4:13 AM, wrote: > > > > Toluene is also not all that nasty. It is methylbenzene but the methyl > group > > seems to prevent most of the carcinogenic action. Maximum safe short-te= rm > > dose is less than acetone/isopropanol. > > > > Well, that doesn't equate to the hoops we had to jump through to use a > toluene based conformal coat on our PCBs. A suitable booth with high volu= me > air extraction and use of full bunny suits while handling it. > > > > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .