A hinge, particularly for doors of any isothermal containers, comprising a first hinge element and a second hinge element, which are suitable to be integral with the structure of said isothermal container and said door, respectively, or vice versa, one of said two elements being rotatable and axially sliding with respect to the other, and wherein: - said first hinge element and said second hinge element comprise two corresponding facing edges (31, 37) with respective cam-shaped profiles (35, 41) cooperating with each other to keep said door in closed condition and automatically bringing it into such a condition due to a spring of the hinge acting on said first or second element and which can be urged by compression by the opening movement of the door, - the cam-shaped profile of said first element comprises two first stretches inclined in opposite direction, which join at a first lower apex, - the cam-shaped profile of said second element comprises two second stretches inclined in opposite direction, which join at a second lower apex, said hinge being characterized in that: - said second hinge element has, on the connection stretch of the upper ends of said second inclined stretches, in diametrically facing position with respect to said second lower apex, a single cavity which can be engaged by the first lower apex of said cam-shaped profile of said first element to bring/keep said door in open configuration, - said cavity has a substantially horizontal central bottom interposed between two oblique or curved stretches, - the middle of said cavity is diametrically opposite to the middle of said second lower apex of the cam-shaped profile of said second element, - the bottom of said cavity has an annular extension which is greater than the contact surface defined on the tip of the first lower apex of the cam-shaped profile of said first element. - said first hinge element and said second hinge element comprise two corresponding facing edges (31, 37) with respective cam-shaped profiles (35, 41) cooperating with each other to keep said door in closed condition and automatically bringing it into such a condition due to a spring of the hinge acting on said first or second element and which can be urged by compression by the opening movement of the door, - the cam-shaped profile of said first element comprises two first stretches inclined in opposite direction, which join at a first lower apex, - the cam-shaped profile of said second element comprises two second stretches inclined in opposite direction, which join at a second lower apex, - said second hinge element has, on the connection stretch of the upper ends of said second inclined stretches, in diametrically facing position with respect to said second lower apex, a single cavity which can be engaged by the first lower apex of said cam-shaped profile of said first element to bring/keep said door in open configuration, - said cavity has a substantially horizontal central bottom interposed between two oblique or curved stretches, - the middle of said cavity is diametrically opposite to the middle of said second lower apex of the cam-shaped profile of said second element, - the bottom of said cavity has an annular extension which is greater than the contact surface defined on the tip of the first lower apex of the cam-shaped profile of said first element.