What is the KB for pentane?

The KB, or base dissociation constant, is not typically associated with pentane because it is a non-polar hydrocarbon and does not behave as a base in aqueous solution. Pentane (C5H12) is primarily known for its physical properties, such as being a liquid at room temperature and having a low boiling point. If you meant to inquire about a different aspect of pentane, please clarify!