There are almost 200 pages of EU rules and guidance in the first document [bottom of 1], and some hundreds more pages in related sections of that site.
That said, the cheap-brand bleach in my cupboard has a word-for-word translation into Danish of the English text, and a consistent layout, and there's some merit in that.
The "DO NOT use or mix with other household chemicals, such as..." part should probably go on the front and a little bigger. I can't imagine that everyone would read the whole thing.
Here (I assume this is an EU regulation) it says "WARNING! Do not use together with other products. May release dangerous gases (chlorine)."