How do we determine the morality of a chemical?

Question

Such as propane, propane accessories, Prozac, etc...

Answer 1

By definition, "things" are amoral. It is how they are used that matters, and thus it becomes a question of the morality of the user.

Some things are almost always used for immoral purposes (pornography, pipe bombs, white hooded robes....).

Other things are almost always used for moral purposes (Bibles, baby formula...)

But these "things" are still amoral (morally neutral).