User:Milton Beychok/Sandbox

In Europe

European Standards for Unleaded Gasoline

Property	Measurement unit	European Union Norm EN 228	ACEA Worldwide Fuel Charter
Octane Rating (a) range	--	95	87 – 93
Vapor pressure	kPa	45 – 90 (b)	45 – 60 (f)
Sulfur concentration	mg/kg (c)	10	10
Benzene concentration	volume %	1.0	1.0
Aromatics concentration	volume %	35.0	35.0
Olefins concentration	volume %	18.0	10.0
Temperature at 10 volume % distilled (T10)	°C (d)	--	65 (f)
Temperature at 50 volume % distilled (T50)	°C	--	77 – 100 (f)
Temperature at 90 volume % distilled (T90)	°C	--	130 – 175 (f)
% evaporated at 70 °C (E70 summer)	volume %	20 – 48	--
% evaporated at 70 °C (E70 winter)	volume %	22 – 50	--
% evaporated at 70 °C (E70 )	volume %	--	20 – 45 (f)
% evaporated at 100 °C (E100)	volume %	46 – 71	50 – 65 (f)
% evaporated at 150 °C (E150)	volume %	75	--
% evaporated at 180 °C (E180 )	volume %	--	90 (f)
Final boiling point (FBP)	°C	210	195
Oxygen concentration	weight %	2.7 (e)	2.7 (g)
(a) Values are (Research Octane Number + Motor Octane Number) / 2 ... or simply (RON + MON) / 2 (c) mg/kg = ppmw (d) °F = 9/5(°C) + 32 (f) Absolute vapor pressures and distillation temperature points are for gasoline markets with ambient temperatures above 15 °C. Other limits apply for markets with lower ambient temperatures. Vapor pressures are measured as per ASTM D-5191. (g) Where oxygenates are used, ethers are preferred. Where up to 10% volume % of ethanol is permitted by existing regulations, the gasoline must meet all the other limits above. Methanol is prohibited. Propanol and higher alcohols are limited to 0.1 volume % or less.