In deviation from the provisions of Sub-section 2.2.2.3 and Table A of Chapter 3.2, mixtures of butadienes and hydrocarbon with a butadiene concentration of more than 20% but not more than 40%, stabilized, having a vapour pressure at 70°C not exceeding 1.1 MPa (11 bar), and a density at 50°C not less than 0.525 kg/l, may be transported according to the Multilateral Agreement M338 until 30 June 2025 under the entry UN 1010 BUTADIENES AND HYDROCARBON MIXTURE, STABILIZED.