When exposed to moisture, this will polymerize. At that point, it will produce butanone oxime vapor, which is slightly toxic. It's also slightly irritating to skin. I wouldn't use it.
You could, however, I highly recommend Maru Lube or lubix if you can wait for it.
Local competitions usually sell it, or you could order it from the internet
Lubricant, you say?
Flowable silicone being the best response system due to its remarkable performance in providing friction without interfering with string play, obviously it would yield the opposite result if you try to use it as a lubricant.