Yes! It is save to use inherited properties as collateral for loan, this is because the property you inherited is now yours. You can only use what belongs to you to acquire loans from the bank and when you inherit property it becomes yours so you have the right to do what you please with the property.
I have seen cases where the parents before dying will warn the kids not to use the properties to collect loans and other things. What do you think will happen in this kind of situation? The reality is that you dare not disobey as that is just like welcoming difficulties into your life.