With all paints they have to have the safety sheets available and it will tell you what they are.
It won't be pre catalysed but it may have something which releases the catalyst when it gets exposed to air.
To be honest all these hardners and paints arn't given the respect that they are due. You can get some extremely nasty exothermic reactions going on if a mish mash of products are all dumped in a box then left to fester and leak.
You can get temprature limits as well if say you use it below 10deg the catalyst doesn't activate. The medium evaporates before the chemistry happens.
The cracking thing is again because of temprature and metal its applied to. Each paint has a range of elastisity if you put it on at say 5degs it can cope with +25 degs above that and -50 below. So you put it on at 5 and the temp gets above 30 it will crack. If you put it on at 15degs you can go to 40 before it cracks.
The engineering codes for protective coverings are full of temprature limits and the like.