Isocyanate question.

'68 Coronet R/T

'68 Coronet R/T

Oldtimer
I use lacquer thinner to clean my spray guns and then save the dirty lacquer thinner in a separate container. My questions concerns whether the ISOs that were originally in the paint are now suspended in the lacquer thinner?

Just want to be sure I am not exposing myself to anything harmful if I re-use this lacquer thinner.
 
Your always being exposed to something bad when you do this type work that is the nature of the beast.
 
depends on what else is mixed in... if any alcohols or water, they'll react with the isocyanates to form urethanes... just wear gloves and respirator.
 
They would be suspended and as mentioned, wear protection and most important always have good ventilation anytime you are using two part systems.
Remember, Iso's have no smell except for that little solvent carrier they are mixed with.
 
Thanks.
I had been using the dirty lacquer thinner to clean up my filler spreaders. Don't know why it took so long for me to realize this might not be a good idea?
 
Probably the best thing you could do with it is give it away it to a jobber or a shop that can run it through a recycler, just use fresh stuff for cleanup. Though they might not want to trust what's in the can if they don't know you...
 
This is a new one on me but my best guess is you are dealing with such a small residue of iso and the cheap lacquer thinners tend to run in the 18,000 parts per million range, I would guess the iso would be toast in 24 hours if not sealed up.
Either way if you wear gloves there will be no risk they will not be airborne.
 
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