Liquid container

A liquid container containing liquid to be supplied to a body of an image forming apparatus, the liquid container comprising:

• a liquid supply port part having a liquid supply port supplying the contained liquid to the outside;
• and
• a cap member mounted on the liquid supply port part, wherein
• the cap member has
• a sealing part that seals the liquid supply port of the liquid supply port part and
• a holding part that holds an information storage device that stores information concerning the liquid,
• the sealing part and the holding part are separably connected together,
• when the cap member is mounted on the liquid supply port part in a state of the sealing part and the holding part being connected together, the holding part is immovably fixed to the liquid supply port part via the sealing part, and
• when the sealing part has been separated from the holding part, the holding part comes to be able to move with respect to the liquid supply port part.