UN No. 3553 was included in the ADR on January 1, 2025. However, this was not taken into account in the table in 4.3.3.2.5. Thus, despite the Tank code PxBN(M) in Table A column (12) being specified, transport in tanks with a diameter of more than 1.5 m is not possible due to the lack of information on the minimum test pressure for tanks and the maximum permissible mass of contents per litre of capacity. For tanks with a diameter of 1.5 m or less, transport is possible according to 4.3.3.2.3 with the values of the test pressure (225 bar) and maximum filling ratio (0.39) in packing instruction P200 in 4.1.4.1.