This stuff I got does say Toluene and also on the glass bottle of Accelerator. I roughed the surface of the inside of my old CF200 and cleaned with accelerator and used some mixed in the AquaSeal FD cement as per instructions. This for pin hole leaks. No patch. Not for zipper. It is not that flexible, but the name implies some flexibility. CF200 material is not that flexible itself.
I noticed the regular black neoprene cement in 4 oz can I got also says has Toluene in it. It is something to do outside. When some what cured I bring inside, but in a room I stay out of. When warm in day time air out the room.