Yea, this stuff is CAUSTIC. Please take proper precautions and limit your exposure.Not to be considered a detractor here but anyone who purchases BaNO3 needs to be careful of the risks: https://en.wikipedia.org/wiki/Barium_nitrate.
I don't recommend it for a beginning motor maker and one should be very careful working with it. I have read of hobbyists use but they were
very fastidious with their methods. AKS