Help! received a clay pack!

Hi!

I'm a complete newbie to this forum, and I've never worked with clay. I received a "DAS modelling material", white, air hardening. It barely has any info on the pack, not more than what I've just told you.
Can I use it to make a/a couple flower pots? Would it be resistant enough? It there a (bad) chance of it being toxic to plants? Do I have to bake it to have it harden faster and to make it more resistant?

Thank you for any advice you have for me!
Alexandra