It's in solution in water or alcohol and applied by spray and evaporation, not airborne as dry particles. I'd guess this risk is quite manageable. Germany isn't exactly a hotbed of environmental abuse.
I'm not worried about what happens at application, but what happens when it breaks down and comes loose from the surface. The former may be in a controlled environment, but the latter may not.
The press releases mention it's available on the consumer level in Germany. Does anyone know the brand name and/or distributor?
Nanopool, it's in the article. I don't think they have a US distributor. I wrote and inquired about it, if I lern anything interesting I'll post it.
I'm going to be in Germany in the summer, I was curious if anyone knew where to purchase it there.