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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 E10, with the number indicating the 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
from 2014-01-01 onwards Minutes - 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
Aromatics Content % v/v - 35.0 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
Ethanol (g) % v/v - 10.0 EN 13132
Iso-Propyl Alcohol (h) % v/v - 12.0 EN ISO 22854
Iso-Butyl Alcohol (h) % v/v - 15.0
Tert-Butyl Alcohol (h) % v/v - 15.0
Ethers (5 or more C atoms) (h) % v/v - 15.0
Other Oxygenates (h) % v/v - 15.0
Vapour Pressure (VP) EN 13016-1b
Summer (1 June – 31 August) kPa 45.0 70.0 EN ISO 3405
Intermediate (1 September – 15 October) kPa 45.0 100.0
Winter (16 October – 15 April) kPa 70.0 100.0
Intermediate (16 April – 31 May) kPa 45.0 100.0
Vapour Lock Index (10VP + 7E70)
16 April – 31 May 1250.0
1 September – 15 October 1250.0
% Evaporated @ 70°C, E70 BS 2000-123
Transition (16 April – 31 May) v/v 22.0 50.0 EN ISO 3405
Summer (1 June – 31 August) v/v 20.0 48.0
Transition (1 September – 15 October) v/v 24.0 52.0
Winter (16 October – 15 April) v/v 24.0 52.0
% Evaporated @ 100°C, E100 v/v 46.0 72.0 ES ISO 3405
% Evaporated @ 150°C, E150 v/v 75.0 - ES ISO 3405
Final Boiling Point (FBP) °C °C - 210 ES ISO 3405
Distillation Residue % v/v - 2 ES ISO 3405

Notes

NOTES
1.)
The fuel covered by this standard is intended for use in petrol-engined road vehicles which require high octane unleaded petrol.
2.) Parameters that do not form part of the BS EN 228 are routinely tested as per confidential agreements with individual customers.

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. 
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]. See also 5.6 and 5.7.2.
c) See also 5.7.2. 
d) See also 5.3.3. 
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). Stabilising agents may be added.
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. BS EN 228:2012

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Unleaded Petrol Supply Locations

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Primary terminals
Stock management terminal

Secondary Terminal Icon

Secondary terminals
Supply location

2BN

litres of fuel supplied to retail customers