# The Motor Fuel (Composition and Content) and the Biofuel (Labelling) (Amendment) (No. 2) Regulations 2021, Regulation 11: Insertion of Schedule AA1


Immediately before Schedule A1 insert the following Schedule—
“SCHEDULE AA1
Environmental Specifications for Petrol and for Diesel Fuel
Regulation 3
Table 1
Petrol
Parameter
Unit
Limits
(1)Test methods must be those specified in BS EN 228:2012. An analytical method specified in a replacement to BS EN 228:2012 can be used if it can be shown to give at least the same accuracy and at least the same level of precision as the analytical method it replaces.
(2)The values quoted in the specification are ‘true values’. In the establishment of their limit values, the terms of BS EN ISO 4259:2017 have been applied and in fixing a minimum value, a minimum difference of 2R above zero has been taken into account (R= reproducibility). The results of individual measurements must be interpreted on the basis of the criteria described in BS EN ISO 4259:2017.
(3)The summer period is the period specified in regulation 5(2).
(4)Other mono-alcohols and ethers with a final boiling point no higher than that stated in BS EN 228:2012.
Minimum
Maximum
Research octane number
95
—
Motor octane number
85
—
Vapour pressure, summer period
kPa
—
70.0
Distillation:
— percentage evaporated at 100°C
% v/v
46.0
—
— percentage evaporated at 150°C
% v/v
75.0
—
Hydrocarbon analysis:
— olefins
% v/v
—
18.0
— aromatics
% v/v
—
35.0
— benzene
% v/v
—
1.0
Oxygen content
% m/m
3.7
Oxygenates
— Methanol
% v/v
3.0
— Ethanol (stabilising agents may be necessary)
% v/v
10.0
— Iso-propyl alcohol
% v/v
—
12.0
— Tert-butyl alcohol
% v/v
—
15.0
— Iso-butyl alcohol
% v/v
—
15.0
— Ethers containing five or more carbon atoms per molecule
% v/v
—
22.0
—Other oxygenates
% v/v
—
15.0
Sulphur content
mg/kg
—
10.0
Lead content
g/l
—
0.005
Table 2
Diesel fuel
Parameter
Unit
Limits
(1)Test methods must be those specified in BS EN 590:2013. An analytical method specified in a replacement to BS EN 590:2013 can be used if it can be shown to give at least the same accuracy and at least the same level of precision as the analytical method it replaces.
(2)The values quoted in the specification are ‘true values’. In the establishment of their limit values, the terms of BS EN ISO 4259:2017 have been applied and in fixing a minimum value, a minimum difference of 2R above zero has been taken into account (R= reproducibility). The results of individual measurements must be interpreted on the basis of the criteria described in BS EN ISO 4259:2017.
(3)FAME must comply with BS EN 14214:2012.
Minimum
Maximum
Cetane number
51.0
—
Density at 15°C
kg/m
—
845.0
Distillation:
— 95% v/v recovered at:
°C
—
360.0
Polycyclic aromatic hydrocarbons
% m/m
—
8.0
Sulphur content
mg/kg
—
10.0
FAME content – EN 14078
% v/v
—
7.0
”.

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Source: https://www.legislation.gov.uk/ukdsi/2021/9780348224856/regulation/11 (the official version)
Page: https://openlegislation.uk/draft-motor-fuel-composition-and-content-and-the-biofuel-labelling-amendment-no-2-regulations-2021/regulation-11
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.