No it's not legal, in fact I believe it's illegal in almost every country in the world, even the ones that AAS are legal in.
DNP is a very affective fat burner, it actually attacks the fat cells and destroys them as where most fat burners only help shrink the cells. The problem is that DNP is one of the most dangerous drugs imaginable, extremely toxic in every sense of the word and is often deadly, even to those who use it responsably. And Wes is correct, it is often part of the chemical make-up of many pesticides, so consider your self warned.
The main issues with DNP are heat regulation and the way it increases free radicals in the body.
Keeping hydrated and cool as well as taking the required amounts of anti-oxidants are the main provisions with this drug.
It's not something you want to risk using if you work outside or in an environment where you have no control of the temperature.
If you have a deskjob or something where you are inside, with the AC on all day, your risks are lower.
The toxicity of DNP is certainly a reality, though overplayed to some extent.
Remember, it was hailed as a wonder drug many years ago before people realized the weight loss could not be controlled, in fact it worked TOO WELL
Deaths from DNP were heat related and due to irresponsible use, not toxicity.
Because it works at the molecular level on the fat cells themselves, it is the most efficient fat burner there is.
I would not recommend it to anyone but the most seasoned of athletes, because you're literally playing with your life if you decide to use it.
It's not for teenagers or young adults as they are usually not responsible enough to follow the precautions.
I do believe DNP is the strongest, most efficient fat burner there is and that is why I don't necessarily recommend it.
It's just too dangerous for most people.
There are people on this forum who I would not trust using it.
Some of you reading this.
I can understand why competition bodybuilders love it for contest prep, but other than that, there are much safer ways of losing fat.