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Federal Register / Vol. 86, No. 122 / Tuesday, June 29, 2021 / Rules and Regulations TABLE 1 OF 1065.710-TEST FUEL SPECIFICATIONS FORA Low-LEVEL ETHANOL-GASOLINE
BLEND
SPECIFICATION
Property
Unit General Testing
Antiknock Index R+M/2

-

Sensitivity R-M

-

Dry Vapor Pressure Equivalent DVPE,d Distillationd 10 % evaporated 50 % evaporated 90 % evaporated Evaporated final boiling point
LowTemperature Testing
87.0-88.4b
Reference Procedure High Altitude Testing Minimum, 87.0

Minimum, 7.5

kPa psi
oc OF
oc OF
oc OF
oc OF

60.0-63.4
8.7-9.2
49-60
120-140

77.2-81.4
11.2-11. 8
43-54
110-130

52.4-55.2
7.6-8.0
49-60
120-140

ASTM D2699 and ASTMD2700
ASTM D2699 and ASTMD2700
ASTMD5191

88-99 190-210
ASTMD86

157-168 315-335
193-216 380-420

Residue
milliliter
Maximum, 2.0

Total Aromatic Hydrocarbons
volume%

21.0-25.0

C6 Aromatics benzene
volume%

0.5-0.7

C7 Aromatics toluene
volume%

5.2-6.4

CS Aromatics
volume%

5.2-6.4

C9 Aromatics
volume%

5.2-6.4

C 1O+ Aromatics
volume%

4.4-5.6

Olefins
volume%

4.0-10.0

Ethanol blended
volume%

9.6-10.0

Ethanol confirmatoryf
volume%

9.4-10.2

Total Content of Oxygenates Other than Ethanolr
volume%

Maximum, 0.1

Sulfur
mg/kg
8.0-11.0

Lead
g/liter
Maximum, 0.0026

Phosphorus
g/liter
Maximum, 0.0013

ASTMD3231

-

Maximum, No. 1

ASTMD130

Copper Corrosion
ASTMD5769

ASTMD6550
See paragraph b3 of this section.
ASTM D4815 or ASTMD5599
ASTM D4815 or ASTMD5599
ASTM D2622, ASTM
D5453 or ASTM D7039
ASTMD3237

mg/100
Maximum, 3.0
ASTMD381
milliliter ASTMD525
Oxidation Stability minute Minimum, 1000
Incorporated by reference; see 1065.1010. See 1065.701d for other allowed procedures.
hOctane specifications apply only for testing related to exhaust emissions. For engines or vehicles that require the use of premium fuel, as described in paragraph d of this section, the adjusted specification for antiknock index is a minimum value of 91.0; no maximum value applies. All other specifications apply for this high-octane fuel.
Calculate dry vapor pressure equivalent, DVPE, based on the measured total vapor pressure,pT, using the following equation: DVPE kPa = 0.956-pT- 2.39 or DVPE psi= 0.956-pT - 0.347. DVPE is intended to be equivalent to Reid Vapor Pressure using a different test method. 0 ASTM D6550 prescribes measurement of olefin concentration in mass %. Multiply this result by 0.857 and round to the first decimal place to determine the olefin concentration in volume %.
rASTM D5599 prescribes concentration measurements for ethanol and other oxygenates in mass%. Convert results to volume% as specified in Section 14.3 of ASTM D4815.

BILLING CODE 656050C

VerDate Sep<11>2014

c The specifications of this paragraph c apply for testing with neat

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gasoline. This is sometimes called indolene or E0 test fuel. Gasoline for
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