ANNEX IXU.K.SPECIFICATIONS OF REFERENCE FUELS
A.REFERENCE FUELSU.K.
1.Technical data on fuels for testing vehicles with positive-ignition enginesU.K.
Type: Petrol (E5)
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Parameter | Unit | Limits | Test method |
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Minimum | Maximum |
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Research octane number, RON | | 95,0 | — | EN 25164
prEN ISO 5164
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Motor octane number, MON | | 85,0 | — | EN 25163
prEN ISO 5163
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Density at 15 °C | kg/m3 | 743 | 756 | EN ISO 3675
EN ISO 12185
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Vapour pressure | kPa | 56,0 | 60,0 | EN ISO 13016-1 (DVPE) |
Water content | % v/v | | 0,015 | ASTM E 1064 |
Distillation: | | | | |
— Evaporated at 70 °C, | % v/v | 24,0 | 44,0 | EN-ISO 3405 |
— evaporated at 100 °C, | % v/v | 48,0 | 60,0 | EN-ISO 3405 |
— evaporated at150 °C, | % v/v | 82,0 | 90,0 | EN-ISO 3405 |
— final boiling point, | °C | 190 | 210 | EN-ISO 3405 |
Residue | % v/v | — | 2,0 | EN-ISO 3405 |
Hydrocarbon analysis: | | | | |
— olefins, | % v/v | 3,0 | 13,0 | ASTM D 1319 |
— aromatics, | % v/v | 29,0 | 35,0 | ASTM D 1319 |
— benzene, | % v/v | — | 1,0 | EN 12177 |
— saturates, | % v/v | Report | ASTM 1319 |
Carbon/hydrogen ratio | | Report | |
Carbon/oxygen ratio | | Report | |
Induction period | minutes | 480 | — | EN-ISO 7536 |
Oxygen content | % m/m | Report | EN 1601 |
Existent gum | mg/ml | — | 0,04 | EN-ISO 6246 |
Sulphur content | mg/kg | — | 10 | EN ISO 20846
EN ISO 20884
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Copper corrosion | | — | Class 1 | EN-ISO 2160 |
Lead content | mg/l | — | 5 | EN 237 |
Phosphorus content | mg/l | — | 1,3 | ASTM D 3231 |
Ethanol | % v/v | 4,7 | 5,3 | EN 1601
EN 13132
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[Type: Petrol (E10):
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( 2 ) Equivalent EN/ISO methods will be adopted when issued for properties listed above.] |
Parameter | Unit | Limits | Test method |
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Minimum | Maximum |
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Research octane number, RON | | 95,0 | 98,0 | EN ISO 5164 |
Motor octane number, MON | | 85,0 | 89,0 | EN ISO 5163 |
Density at 1 5 °C | kg/m 3 | 743,0 | 756,0 | EN ISO 12185 |
Vapour pressure (DVPE) | kPa | 56,0 | 60,0 | EN 13016-1 |
Water content | | max 0,05 % v/v
Appearance at – 7 °C: clear and bright
| EN 12937 |
Distillation: | | | | |
— evaporated at 70 °C | % v/v | 34,0 | 46,0 | EN ISO 3405 |
— evaporated at 100 °C | % v/v | 54,0 | 62,0 | EN ISO 3405 |
— evaporated at 150 °C | % v/v | 86,0 | 94,0 | EN ISO 3405 |
— final boiling point | °C | 170 | 195 | EN ISO 3405 |
Residue | % v/v | — | 2,0 | EN ISO 3405 |
Hydrocarbon analysis: | | | | |
— olefins | % v/v | 6,0 | 13,0 | EN 22854 |
— aromatics | % v/v | 25,0 | 32,0 | EN 22854 |
— benzene | % v/v | — | 1,0 | EN 22854
EN 238
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— saturates | % v/v | report | EN 22854 |
Carbon/hydrogen ratio | | report | |
Carbon/oxygen ratio | | report | |
Induction Period | minutes | 480 | — | EN ISO 7536 |
Oxygen content | % m/m | 3,3 | 3,7 | EN 22854 |
Solvent washed gum
(Existent gum content)
| mg/100 ml | — | 4 | EN ISO 6246 |
Sulphur content | mg/kg | — | 10 | EN ISO 20846
EN ISO 20884
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Copper corrosion 3 hrs, 50 °C | | — | class 1 | EN ISO 2160 |
Lead content | mg/l | — | 5 | EN 237 |
Phosphorus content | mg/l | — | 1,3 | ASTM D 3231 |
Ethanol | % v/v | 9,0 | 10,0 | EN 22854 |
Type: Ethanol (E85)
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Parameter | Unit | Limits | Test method |
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Minimum | Maximum |
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Research octane number, RON | | 95 | — | EN ISO 5164 |
Motor octane number, MON | | 85 | — | EN ISO 5163 |
Density at 15 °C | kg/m3 | Report | ISO 3675 |
Vapour pressure | kPa | 40 | 60 | EN ISO 13016-1 (DVPE) |
Sulphur content | mg/kg | — | 10 | EN ISO 20846 EN ISO 20884 |
Oxidation stability | minutes | 360 | | EN ISO 7536 |
Existent gum content (solvent washed) | mg/100ml | — | 5 | EN-ISO 6246 |
Appearance This shall be determined at ambient temperature or 15 °C whichever is higher. | | Clear and bright, visibly free of suspended or precipitated contaminants | Visual inspection |
Ethanol and higher alcohols | % (V/V) | 83 | 85 | EN 1601
EN 13132
EN 14517
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Higher alcohols (C3-C8) | % (V/V) | — | 2 | |
Methanol | % (V/V) | | 0,5 | |
Petrol | % (V/V) | Balance | EN 228 |
Phosphorus | mg/l | 0,3 | ASTM D 3231 |
Water content | % (V/V) | | 0,3 | ASTM E 1064 |
Inorganic chloride content | mg/l | | 1 | ISO 6227 |
pHe | | 6,5 | 9 | ASTM D 6423 |
Copper strip corrosion (3h at 50 °C) | Rating | Class 1 | | EN ISO 2160 |
Acidity, (as acetic acid CH3COOH) | % (m/m) (mg/l) | — | 0,005-40 | ASTM D 1613 |
Carbon/hydrogen ratio | | report | |
Carbon/oxygen ration | | report | |
Type: LPG
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Parameter | Unit | Fuel A | Fuel B | Test method |
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Composition: | | | | ISO 7941 |
C3-content | % vol | 30 ± 2 | 85 ± 2 | |
C4-content | % vol | Balance | Balance | |
< C3, > C4 | % vol | Maximum 2 | Maximum 2 | |
Olefins | % vol | Maximum 12 | Maximum 15 | |
Evaporation residue | mg/kg | Maximum 50 | Maximum 50 | prEN 15470 |
Water at 0 °C | | Free | Free | prEN 15469 |
Total sulphur content | mg/kg | Maximum 10 | Maximum 10 | ASTM 6667 |
Hydrogen sulphide | | None | None | ISO 8819 |
Copper strip corrosion | Rating | Class 1 | Class 1 | ISO 6251 |
Odour | | Characteristic | Characteristic | |
Motor octane number | | Minimum 89 | Minimum 89 | EN 589 Annex B |
Type: NG/Biomethane
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Characteristics | Units | Basis | Limits | Test method |
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minimum | maximum |
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Reference fuel G20 |
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Composition: | | | | | |
Methane | % mole | 100 | 99 | 100 | ISO 6974 |
Balance | % mole | — | — | 1 | ISO 6974 |
N2 | % mole | | | | ISO 6974 |
Sulphur content | mg/m3 | — | — | 10 | ISO 6326-5 |
Wobbe Index (net) | MJ/m3 | 48,2 | 47,2 | 49,2 | |
Reference fuel G25 |
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Composition: | | | | | |
Methane | % mole | 86 | 84 | 88 | ISO 6974 |
Balance | % mole | — | — | 1 | ISO 6974 |
N2 | % mole | 14 | 12 | 16 | ISO 6974 |
Sulphur content | mg/m3 | — | — | 10 | ISO 6326-5 |
Wobbe Index (net) | MJ/m3 | 39,4 | 38,2 | 40,6 | |
[Type: Hydrogen for internal combustion engines
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Characteristics | Units | Limits | Test method |
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minimum | maximum |
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Hydrogen purity | % mole | 98 | 100 | ISO 14687-1 |
Total hydrocarbon | μmol/mol | 0 | 100 | ISO 14687-1 |
Water | μmol/mol | 0 | | ISO 14687-1 |
Oxygen | μmol/mol | 0 | | ISO 14687-1 |
Argon | μmol/mol | 0 | | ISO 14687-1 |
Nitrogen | μmol/mol | 0 | | ISO 14687-1 |
CO | μmol/mol | 0 | 1 | ISO 14687-1 |
Sulphur | μmol/mol | 0 | 2 | ISO 14687-1 |
Permanent particulates | | | | ISO 14687-1 |
Type: Hydrogen for fuel cell vehicles
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Characteristics | Units | Limits | Test method |
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minimum | maximum |
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Hydrogen fuel | % mole | 99,99 | 100 | ISO 14687-2 |
Total gases | μmol/mol | 0 | 100 | |
Total hydrocarbon | μmol/mol | 0 | 2 | ISO 14687-2 |
Water | μmol/mol | 0 | 5 | ISO 14687-2 |
Oxygen | μmol/mol | 0 | 5 | ISO 14687-2 |
Helium (He), Nitrogen (N 2 ), Argon (Ar) | μmol/mol | 0 | 100 | ISO 14687-2 |
CO 2 | μmol/mol | 0 | 2 | ISO 14687-2 |
CO | μmol/mol | 0 | 0,2 | ISO 14687-2 |
Total sulphur compounds | μmol/mol | 0 | 0,004 | ISO 14687-2 |
Formaldehyde (HCHO) | μmol/mol | 0 | 0,01 | ISO 14687-2 |
Formic acid (HCOOH) | μmol/mol | 0 | 0,2 | ISO 14687-2 |
Ammonia (NH 3 ) | μmol/mol | 0 | 0,1 | ISO 14687-2 |
Total halogenated compounds | μmol/mol | 0 | 0,05 | ISO 14687-2 |
Particulates size | μm | 0 | 10 | ISO 14687-2 |
Particulates concentration | μg/l | 0 | 1 | ISO 14687-2 |
Type: H2NG
The hydrogen and the NG/biomethane fuels composing a H2NG mixture, must comply separately with their corresponding characteristics, expressed in this Annex.]
2.Technical data on fuels for testing vehicles with compression ignition enginesU.K.
Type: Diesel (B5)
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Parameter | Unit | Limits | Test method |
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Minimum | Maximum |
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Cetane number | | 52,0 | 54,0 | EN-ISO 5165 |
Density at 15 °C | kg/m3 | 833 | 837 | EN-ISO 3675 |
Distillation: | | | | |
— 50 % point | °C | 245 | — | EN-ISO 3405 |
— 95 % point | °C | 345 | 350 | EN-ISO 3405 |
— final boiling point | °C | — | 370 | EN-ISO 3405 |
Flash point | °C | 55 | — | EN 22719 |
CFPP | °C | — | – 5 | EN 116 |
Viscosity at 40 °C | mm2/s | 2,3 | 3,3 | EN-ISO 3104 |
Polycyclic aromatic hydrocarbons | % m/m | 2,0 | 6,0 | EN 12916 |
Sulphur content | mg/kg | — | 10 | EN ISO 20846/EN ISO 20884 |
Copper corrosion | | — | Class 1 | EN-ISO 2160 |
Conradson carbon residue (10 % DR) | % m/m | — | 0,2 | EN-ISO10370 |
Ash content | % m/m | — | 0,01 | EN-ISO 6245 |
Water content | % m/m | — | 0,02 | EN-ISO12937 |
Neutralisation (strong acid) number | mg KOH/g | — | 0,02 | ASTM D 974 |
Oxidation stability | mg/ml | — | 0,025 | EN-ISO12205 |
Lubricity (HFRR wear scan diameter at 60 °C) | μm | — | 400 | EN ISO 12156 |
Oxidation stability at 110 °C | h | 20,0 | | EN 14112 |
FAME | % v/v | 4,5 | 5,5 | EN 14078 |
[Type: Diesel (B7):
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Parameter | Unit | Limits | Test method |
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Minimum | Maximum |
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Cetane Index | | 46,0 | | EN ISO 4264 |
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Cetane number | | 52,0 | 56,0 | EN ISO 5165 |
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Density at 15 °C | kg/m 3 | 833,0 | 837,0 | EN ISO 12185 |
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Distillation: | | | | |
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— 50 % point | °C | 245,0 | — | EN ISO 3405 |
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— 95 % point | °C | 345,0 | 360,0 | EN ISO 3405 |
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— final boiling point | °C | — | 370,0 | EN ISO 3405 |
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Flash point | °C | 55 | — | EN ISO 2719 |
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Cloud point | °C | — | – 10 | EN 23015 |
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Viscosity at 40 °C | mm 2 /s | 2,3 | 3,3 | EN ISO 3104 |
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Polycyclic aromatic hydrocarbons | % m/m | 2,0 | 4,0 | EN 12916 |
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Sulphur content | mg/kg | — | 10,0 | EN ISO 20846
EN ISO 20884
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Copper corrosion 3 hrs, 50 °C | | — | Class 1 | EN ISO 2160 |
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Conradson carbon residue (10 % DR) | % m/m | — | 0,2 | EN ISO 10370 |
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Ash content | % m/m | — | 0,01 | EN ISO 6245 |
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Total contamination | mg/kg | — | 24 | EN 12662 |
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Water content | mg/kg | — | 200 | EN ISO 12937 |
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Acid number | mg KOH/g | — | 0,1 | EN ISO 6618 |
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Lubricity (HFRR wear scan diameter at 60 °C) | μm | — | 400 | EN ISO 12156 |
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Oxidation stability at 110 °C | h | 20,0 | | EN 15751 |
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FAME | % v/v | 6,0 | 7,0 | EN 14078 |
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B.REFERENCE FUELS FOR TESTING EMISSIONS AT LOW AMBIENT TEMPERATURES — TYPE 6 TESTU.K.
Type: Petrol (E5)
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Parameter | Unit | Limits | Test method |
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Minimum | Maximum |
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Research octane number, RON | | 95,0 | — | EN 25164
prEN ISO 5164
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Motor octane number, MON | | 85,0 | — | EN 25163
prEN ISO 5163
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Density at 15 °C | kg/m3 | 743 | 756 | ISO 3675
EN ISO 12185
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Vapour pressure | kPa | 56,0 | 95,0 | EN ISO 13016-1 (DVPE) |
Water content | % v/v | | 0,015 | ASTM E 1064 |
Distillation: | | | | |
— evaporated at 70 °C | % v/v | 24,0 | 44,0 | EN-ISO 3405 |
— evaporated at 100 °C | % v/v | 50,0 | 60,0 | EN-ISO 3405 |
— evaporated at 150 °C | % v/v | 82,0 | 90,0 | EN-ISO 3405 |
— final boiling point | °C | 190 | 210 | EN-ISO 3405 |
Residue | % v/v | — | 2,0 | EN-ISO 3405 |
Hydrocarbon analysis: | | | | |
— olefins | % v/v | 3,0 | 13,0 | ASTM D 1319 |
— aromatics | % v/v | 29,0 | 35,0 | ASTM D 1319 |
— benzene | % v/v | — | 1,0 | EN 12177 |
— saturates | % v/v | Report | ASTM D 1319 |
Carbon/hydrogen ratio | | Report | |
Carbon/oxygen ratio | | Report | |
Induction period | minutes | 480 | — | EN-ISO 7536 |
Oxygen content | % m/m | Report | EN 1601 |
Existent gum | mg/ml | — | 0,04 | EN-ISO 6246 |
Sulphur content | mg/kg | — | 10 | EN ISO 20846
EN ISO 20884
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Copper corrosion | | — | Class 1 | EN-ISO 2160 |
Lead content | mg/l | — | 5 | EN 237 |
Phosphorus content | mg/l | — | 1,3 | ASTM D 3231 |
Ethanol | % v/v | 4,7 | 5,3 | EN 1601
EN 13132
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[Type: Petrol (E10):
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( 2 ) Equivalent EN/ISO methods will be adopted when issued for properties listed above.] |
Parameter | Unit | Limits | Test method |
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Minimum | Maximum |
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Research octane number, RON | | 95,0 | 98,0 | EN ISO 5164 |
Motor octane number, MON | | 85,0 | 89,0 | EN ISO 5163 |
Density at 15 °C | kg/m 3 | 743,0 | 756,0 | EN ISO 12185 |
Vapour pressure (DVPE) | kPa | 56,0 | 95,0 | EN 13016-1 |
Water content | | max 0,05 % v/v
Appearance at – 7 °C: clear and bright
| EN 12937 |
Distillation: | | | | |
— evaporated at 70 °C | % v/v | 34,0 | 46,0 | EN ISO 3405 |
— evaporated at 100 °C | % v/v | 54,0 | 62,0 | EN ISO 3405 |
— evaporated at 150 °C | % v/v | 86,0 | 94,0 | EN ISO 3405 |
— final boiling point | °C | 170 | 195 | EN ISO 3405 |
Residue | % v/v | — | 2,0 | EN ISO 3405 |
Hydrocarbon analysis: | | | | |
— olefins | % v/v | 6,0 | 13,0 | EN 22854 |
— aromatics | % v/v | 25,0 | 32,0 | EN 22854 |
— benzene | % v/v | — | 1,0 | EN 22854
EN 238
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— saturates | % v/v | report | EN 22854 |
Carbon/hydrogen ratio | | report | |
Carbon/oxygen ratio | | report | |
Induction Period | minutes | 480 | — | EN ISO 7536 |
Oxygen content | % m/m | 3,3 | 3,7 | EN 22854 |
Solvent washed gum
(Existent gum content)
| mg/100 ml | — | 4 | EN ISO 6246 |
Sulphur content | mg/kg | — | 10 | EN ISO 20846
EN ISO 20884
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Copper corrosion 3 hrs, 50 °C | | — | class 1 | EN ISO 2160 |
Lead content | mg/l | — | 5 | EN 237 |
Phosphorus content | mg/l | — | 1,3 | ASTM D 3231 |
Ethanol | % v/v | 9,0 | 10,0 | EN 22854 |
Type: Ethanol (E75)
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[Parameter | Unit | Limits | Test method |
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Minimum | Maximum |
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Research octane number, RON | | 95 | — | EN ISO 5164 |
Motor octane number, MON | | 85 | — | EN ISO 5163 |
Density at 15 °C | kg/m 3 | report | EN ISO 12185 |
Vapour pressure | kPa | 50 | 60 | EN ISO 13016-1 (DVPE) |
Sulphur content | mg/kg | — | 10 | EN ISO 20846
EN ISO 20884
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Oxidation stability | minutes | 360 | — | EN ISO 7536 |
Existent gum content (solvent washed) | mg/100ml | — | 4 | EN ISO 6246 |
Appearance shall be determined at ambient temperature or 15 °C whichever is higher | | Clear and bright, visibly free of suspended or precipitated contaminants | Visual inspection |
Ethanol and higher alcohols | % (V/V) | 70 | 80 | EN 1601
EN 13132
EN 14517
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Higher alcohols (C 3 – C 8 ) | % (V/V) | — | 2 | |
Methanol | | — | 0,5 | |
Petrol | % (V/V) | Balance | EN 228 |
Phosphorus | mg/l | 0,3 | EN 15487
ASTM D 3231
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Water content | % (V/V) | — | 0,3 | ASTM E 1064
EN 15489
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Inorganic chloride content | mg/l | — | 1 | ISO 6227 — EN 15492 |
pHe | | 6,5 | 9 | ASTM D 6423
EN 15490
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Copper strip corrosion (3h at 50 °C) | Rating | Class 1 | | EN ISO 2160 |
Acidity (as acetic acid CH 3 COOH) | % (m/m) | | 0,005 | ASTM D1613
EN 15491
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mg/l | | 40 |
Carbon/hydrogen ration | | report | |
Carbon/oxygen ration | | report | |