Is it safe for your baby to chew on wipes?

If you mean hand sanitizer wipes, then no, it is completely unsafe. It contains disinfectants and other cleansing agents that is bad. In perspective, it's like an adult eating dish soap. It isn't good for the body, and could potentially harm.

If it is a dry wipe, and not a hand sanitizing wipe, and does not have loose threads that easily detach, then it is perfectly safe.