A sensing sealant liquid container for repairing an inflatable article, preferably a tyre, comprises a first portion produced by injection moulding and a second portion produced by injection moulding, the first and the second portion being connected to each other to delimit a volume inside which a sealant liquid is retained, an outlet tube for the sealant liquid when the container is pressurized and a sensor for verifying the functional connection of the tube to the inflatable article, and at least one track electrically connected to the sensor and co-moulded on one of the first and the second portion, the track defining a contact releasable electrical connection.