Connection arrangement for temporary fluid-tight connection of an anaesthetic container to an anaesthetic vaporizer, wherein the connection arrangement comprises - a connection section which is connected or connectable to the anaesthetic vaporizer, and - an adaptor which is connected or connectable to the anaesthetic container, wherein the connection section comprises - an inner vaporizer-side component and - a hollow outer vaporizer-side component, wherein the inner vaporizer-side component is guided through the outer vaporizer-side component, wherein the adaptor is able to be releasably connected to the connection section, wherein the connection section comprises a vaporizer-side channel section (K.V), wherein the vaporizer-side channel section (K.V) is guided through the inner vaporizer-side component, wherein the adaptor comprises a container-side channel section (K.B), and wherein, when the adaptor is connected to the connection section, - the two channel sections (K.B, K.V) form a continuous channel, with the aid of which a fluid connection between the anaesthetic container and the anaesthetic vaporizer is or is able to be established, - that region of the surface of the connection section which points towards the adaptor is formed by a vaporizer-side contact profile (K.1, K.8), - that region of the surface of the adaptor which points towards the connection section is formed by a container-side contact profile (K.25, 28, 31), - the two contact profiles (K.1, K.8, K.25, 28, 31) bear against one another without any space between them, - one contact profile (K.1, K.8) has a projection and the other contact profile (K.25, 28, 31) has a corresponding cutout, and - the projection engages into the cutout in a form-fitting manner. wherein the connection arrangement comprises - a connection section which is connected or connectable to the anaesthetic vaporizer, and - an adaptor which is connected or connectable to the anaesthetic container, - a connection section which is connected or connectable to the anaesthetic vaporizer, and - an adaptor which is connected or connectable to the anaesthetic container, wherein the connection section comprises - an inner vaporizer-side component and - a hollow outer vaporizer-side component, - an inner vaporizer-side component and - a hollow outer vaporizer-side component, wherein the inner vaporizer-side component is guided through the outer vaporizer-side component, wherein the adaptor is able to be releasably connected to the connection section, wherein the connection section comprises a vaporizer-side channel section (K.V), wherein the vaporizer-side channel section (K.V) is guided through the inner vaporizer-side component, wherein the adaptor comprises a container-side channel section (K.B), and wherein, when the adaptor is connected to the connection section, - the two channel sections (K.B, K.V) form a continuous channel, with the aid of which a fluid connection between the anaesthetic container and the anaesthetic vaporizer is or is able to be established, - that region of the surface of the connection section which points towards the adaptor is formed by a vaporizer-side contact profile (K.1, K.8), - that region of the surface of the adaptor which points towards the connection section is formed by a container-side contact profile (K.25, 28, 31), - the two contact profiles (K.1, K.8, K.25, 28, 31) bear against one another without any space between them, - one contact profile (K.1, K.8) has a projection and the other contact profile (K.25, 28, 31) has a corresponding cutout, and - the projection engages into the cutout in a form-fitting manner. - the two channel sections (K.B, K.V) form a continuous channel, with the aid of which a fluid connection between the anaesthetic container and the anaesthetic vaporizer is or is able to be established, - that region of the surface of the connection section which points towards the adaptor is formed by a vaporizer-side contact profile (K.1, K.8), - that region of the surface of the adaptor which points towards the connection section is formed by a container-side contact profile (K.25, 28, 31), - the two contact profiles (K.1, K.8, K.25, 28, 31) bear against one another without any space between them, - one contact profile (K.1, K.8) has a projection and the other contact profile (K.25, 28, 31) has a corresponding cutout, and - the projection engages into the cutout in a form-fitting manner.