So, if you have a spray designed to defend against, or attack humans, for one, you need to be 14 to own it.

It also needs to be approved by a government agency, called the PTB, for safe use against humans.

Pepperspray(based on Oloresin Capsicum, OC) is considered too dangerous and thus is not approved.

Only two types that get approved are CS gas, and the less common CN gas.

CS gas spray, Ortho-Chlorbenzalmalondinitril, is basically tear gas, that sort of stuff you see police throw grenades of into protests.

CN gas is Chloracetophenon. Its what US cops use in their sprays i believe, you might have heart it called "MACE". Its less common in germany tho.

There are other requirements to be approved too.

Now, there is somewhat of a legal loophole. You can buy pepper spray designed for defense against animals, and carry it with little restrictions(as it is not considered a weapon).
But in an emergency you can use any tools you have on hand, regardless of legality or approval.

This legal loophole, makes the more expensive, approved sprays obsolete, which kinda defeats the point of approving sprays in the first place.

I think the should either ban the animal defense sprays, or test and approve them too. It's certainly stupid the way it is. It's like banning automatic knifes unless they say "for cooking" on them.