ANFO is explosives made with ammonium nitrate(Ammonium Nitrate Fuel Oil), however ammonium nitrate is by itself rather energetic and will explode when store improperly. The most recent memorable incident would be 2020 Beirut: https://en.wikipedia.org/wiki/2020_Beirut_explosion
Imagine one of these units left somewhere, slowly filling a tank that has not been sealed, water evaporating back out leaving a nice ammonium nitrate powder behind....
NGL, it would be an easy sell. You are just a hop/skip and a quack away from turning that decentralized fertilizer into a decentralized bomb making system.
A hop, skip, quack, jump, and fairly obvious high-energy distillation process away. The national security angle probably isn't a concern here for the same reason that this process doesn't produce good fuel.
Ammonium nitrate is made from ammonia and nitric acid (which is also made from ammonia). Therefore, ammonia is the only necessary direct precursor to ammonium nitrate, which is probably the most relevant oxidizer in improvised explosives today.
Not saying that it should be regulated on the basis of national security, but it’s not like there isn’t a potential security concern.
It's not out of business. It merged with Bayer. It's a change in ownership, and to some degree a change in upper management, but large swathes of the company are unchanged.
Its assets were sold to Bayer and BASF and some former Monsanto workers may have begun working at those other businesses, that is true. That kind of scenario is true of all businesses that close down, though, at least unless they truly have no remaining assets to sell or workers wanting new jobs, both of which are unlikely for anything beyond the simplest of sole proprietorships. By your logic, there is almost no business in history that has ever gone out of business.