Division 2.3 F1

Point 5.2.4 of UNECE Regulation No 101 shall be understood as:

1. (1)

   density: measured on the test fuel according to ISO 3675 or an equivalent method. For petrol, diesel, biodiesel and ethanol (E85 end E75), the density measured at 15 °C will be used; for LPG and natural gas/biomethane a reference density shall be used, as follows:

   • 0,538 kg/litre for LPG,

   • 0,654 kg/m ³ for NG (mean value of G20 and G23 reference fuels at 15 °C.)

2. (2)

   hydrogen-carbon-oxygen ratio: the following fixed values shall be used:

   • C ₁ H _1,89 O _0,016 for petrol (E5),

   • C ₁ H _1,93 O _0,033 for petrol (E10),

   • C ₁ H _1,86 O _0,005 for diesel (B5),

   • C ₁ H _1,86 O _0,007 for diesel (B7),

   • C ₁ H _2,525 for LPG (liquefied petroleum gas),

   • CH ₄ for NG (natural gas) and biomethane,

   • C ₁ H _2,74 O _0,385 for ethanol (E85),

   • C ₁ H _2,61 O _0,329 for ethanol (E75).