It's fine, but runs a bit hot for new plants. You can use it as a starter, but cut it 50/50 with a perlite/vermiculite mix.
Vermiculite is handy In mixes that run a bit hot for seedlings as it acts as a buffer and promotes cation exchange. The perlite will help aerate, and the vermiculite will help buffer and hold onto the over-abundance of positively charged ions in the hotter mixes.
When the plant outgrows it's starter pot and matures enough to take the mix, you can blend up 80% soil/20% perlite/vermiculite for the final medium.