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Unleaded Petrol

Petrol or Unleaded is used primarily as a fuel in internal combustion engines for road transport. Petrol is marketed as E5 and E0, with the numbers indicating the respective percentage of Ethanol.

Unleaded Petrol BS EN 228:2012

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Property Units   Limits Test method (notes)
MIN MAX
Research Octane Number, RON - 95.0 - EN ISO 5164 (b)
Motor Octane Number, MON - 85.0 - EN ISO 5163 (b)
Lead Content mg/l - 5.0 EN 237
Density @ 15°C (c) kg/m³ 720.0 775.0 EN ISO 3675 / 12185
Sulphur Content (c) mg/kg - 10.0 EN ISO 13032 / 20846 / 20884
Manganese Content (d)
until 2013-12-31 mg/l - 6.0 EN 16136
from 2014-01-01 onwards mg/l - 2.0 EN 16136
Oxidation Stabilty Minutes 360.0 - EN ISO 7536
Existent Gun Content (solvent washed) mg/100ml - 5.0 EN ISO 6246
Copper Corrosion (3hr @ 50°C) rating Class 1 - EN ISO 2160
Appearance (e) - Clear and bright - Visual inspection
Hydrocarbon Type Content (c)
Olefin Content % v/v - 18.0 EN 15553 / EN ISO 22854
Aromatics Content % v/v - 35.0 EN 15553 / EN ISO 22854
Benezene Content (c) % v/v - 1.0 EN 238 / 12177 / EN ISO 22854
Oxygen Content (c) % m/m - 2.7 EN 1601 / 13132 / EN ISO 22854
Oxygenates Content (c)
Methanol (f) % v/v - 3.0 EN 1601 / 13132 / EN ISO 22854
Ethanol (g) % v/v - 5.0 EN 1601 / 13132 / EN ISO 22854
Iso-Propyl Alcohol (h) % (m/m) - 2.7 EN 1601 / 13132 / EN ISO 22854
Iso-Butyl Alcohol (h) % (m/m) - 2.7 EN 1601 / 13132 / EN ISO 22854
Tert-Butyl Alcohol (h) % (m/m) - 2.7 EN 1601 / 13132 / EN ISO 22854
Ethers (5 or more C atoms) (h) % (m/m) - 2.7 EN 1601 / 13132 / EN ISO 22854
Other Oxygenates (h) (i) % (m/m) - 2.7 EN 1601 / 13132 / EN ISO 22854

Notes

NOTE: Requirements in bold refer to the European Fuels Directive 98/70/EC [1], including subsequent Amendments [2], [3] and [4]

a) See also 5.7.1. in BS EN 228:2012
b) A correction of 0,2 for MON and RON shall be subtracted for the calculation of the final result, before reporting according to the requirement of the European Fuels Directive 98/70/EC [1], including subsequent Amendments [2], [3] and [4].
c) See also 5.7.2. in BS EN 228:2012
d) See also 5.3.3. in BS EN 228:2012
e) Appearance shall be determined at ambient temperature.
f) Stabilising agents shall be added.
g) Ethanol when used as a blending component shall conform to EN 15376 (see 5.1 in BS EN 228:2012). Stabilising agents may
h) The oxygen content of the finished unleaded petrol shall not exceed 2,7 % (m/m). A CEN/TR on oxygenate blending is under preparation.
i) Other mono-alcohols and ethers with a final boiling point no higher than prescribed in Table 4 in BS EN 228:2012

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