Standard Specification for Fuel Methanol (M70-M85) for Automotive Spark-Ignition Engines

SCOPE
1.1 This specification covers a fuel blend, nominally 70 to 85 volume % methanol and 30 to 14 volume % hydrocarbons for use in ground vehicles with automotive spark-ignition engines. Appendix X1 discusses the significance of the properties specified. Appendix X2 presents the current status in the development of a luminosity test procedure for M70-M85.
1.2 The values stated in SI units are to be regarded as the standard. Values given in parentheses are provided for information only.
1.3 The following precautionary caveat pertains only to the test method portions-Annex A1, Annex A2, Annex A3, and Appendix X2 of this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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ASTM D5797-96(2001) - Standard Specification for Fuel Methanol (M70-M85) for Automotive Spark-Ignition Engines
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
An American National Standard
Designation: D 5797 – 96 (Reapproved 2001)
Standard Specification for
Fuel Methanol (M70-M85) for Automotive Spark-Ignition
Engines
This standard is issued under the fixed designation D5797; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope D1613 Test Method for Acidity in Volatile Solvents and
Chemical Intermediates Used in Paint, Varnish, Lacquer,
1.1 This specification covers a fuel blend, nominally 70 to
and Related Products
85 volume % methanol and 30 to 14 volume % hydrocarbons
D2622 Test Method for Sulfur in Petroleum Products by
for use in ground vehicles with automotive spark-ignition
X-ray Spectrometry Method
engines. Appendix X1 discusses the significance of the prop-
D2988 Test Method for Water-Soluble Halide Ion in Halo-
erties specified.Appendix X2 presents the current status in the
genated Organic Solvents and Their Admixtures
development of a luminosity test procedure for M70-M85.
D3120 Test Method forTrace Quantities of Sulfur in Light
1.2 The values stated in SI units are to be regarded as the
Liquid Petroleum Hydrocarbons by Oxidative Microcou-
standard. Values given in parentheses are provided for infor-
lometry
mation only.
D3231 Test Method for Phosphorus in Gasoline
1.3 The following precautionary caveat pertains only to the
D4057 Practice for Manual Sampling of Petroleum and
test method portions–Annex A1, Annex A2, Annex A3, and
Petroleum Products
Appendix X2 of this specification. This standard does not
D4177 Practice for Automatic Sampling of Petroleum and
purport to address all of the safety concerns, if any, associated
Petroleum Products
with its use. It is the responsibility of the user of this standard
D4307 PracticeforPreparationofLiquidBlendsforUseas
to establish appropriate safety and health practices and
Analytical Standards
determine the applicability of regulatory limitations prior to
D4626 Practice for Calculation of Gas Chromatographic
use.
Response Factors
2. Referenced Documents D4814 SpecificationforAutomotiveSpark-IgnitionEngine
Fuel
2.1 ASTM Standards:
D4815 Test Method for Determination of MTBE, ETBE,
D86 Test Method for Distillation of Petroleum Products
TAME, DIPE, tertiary-Amyl Alcohol and C to C Alco-
D130 TestMethodforDetectionofCopperCorrosionfrom 1 4
hols in Gasoline by Gas Chromatography
Petroleum Products by the Copper Strip Tarnish Test
D4929 Test Methods for Determination of Organic Chlo-
D381 Test Method for Existent Gum in Fuels by Jet
ride Content in Crude Oil
Evaporation
D4953 Test Method for Vapor Pressure of Gasoline and
D512 Test Methods for Chloride Ion in Water
Gasoline-Oxygenate Blends (Dry Method)
D525 Test Method for Oxidation Stability of Gasoline
D5059 Test Method for Lead in Gasoline by X-ray Spec-
(Induction Period Method)
troscopy
D872 Test Method for Sulfonation Index of Road Tars
D5190 Test Method forVapor Pressure of Petroleum Prod-
D1193 Specification for Reagent Water
ucts (Automatic Method)
D1266 Test Method for Sulfur in Petroleum Products
D5191 Test Method forVapor Pressure of Petroleum Prod-
(Lamp Method)
ucts (Mini Method)
D5453 Test Method for Determination of Total Sulfur in
Light Hydrocarbons, Motor Fuels and Oils by Ultraviolet
This specification is under the jurisdiction of ASTM Committee D02 on
Fluorescence
Petroleum Products and Lubricants and is under the direct responsibility of
E203 Test Method for Water Using Karl Fischer Reagent
Subcommittee D02.A on Gasoline and Oxygenated Fuels.
Current edition approved April 10, 1996. Published June 1996. Originally
published as D5797–95. Last previous edition D5797–95.
Reference to the following documents is to be the latest issue unless otherwise
specified. Annual Book of ASTM Standards, Vol 06.04.
3 7
Annual Book of ASTM Standards, Vol 05.01. Annual Book of ASTM Standards, Vol 15.05.
4 8
Annual Book of ASTM Standards, Vol 11.01. Annual Book of ASTM Standards, Vol 05.02.
5 9
Annual Book of ASTM Standards, Vol 04.03. Annual Book of ASTM Standards, Vol 05.03.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D 5797 – 96 (2001)
E355 Practice for Gas Chromatography Terms and Rela- 3.2.4 hydrocarbon—those components in a methanol-
tionships hydrocarbon blend that contain only hydrogen and carbon.
E1145 Specification for Denatured EthylAlcohol, Formula
7 4. Fuel Methanol (M70-M85) Performance Requirements
3A
4.1 Fuelmethanol(M70-M85)shallconformtotherequire-
3. Terminology ments in Table 1.
3.1 Definitions:
NOTE 1—Most of the requirements cited in Table 1 are based on the
3.1.1 methanol, n—methylalcohol,thechemicalcompound
best technical information currently available regarding the performance
CH OH. of these fuels in current technology vehicles. Requirements for sulfur,
phosphorus, and lead are based on the use of gasoline defined in
3.2 Definitions of Terms Specific to This Standard:
Specification D4814 understanding that control of these elements will
3.2.1 aliphatic ether—an oxygen-containing, ashless, or-
affectcatalystlifetime.TheleadmaximumislimitedforClass1andClass
ganic compound in which the oxygen atom is interposed
2 fuels to the lower limit of the test method. As greater experience is
betweeen two carbon atoms (organic groups), has the general
gained from field use of M70-M85 vehicles, and further vehicle hardware
formulaC H Owithnbeing5to8,andinwhichthecarbon
n 2n+2 developments for the use of higher methanol content fuels occurs, it is
atoms are connected in open chains and not closed rings. expected that many of these requirements will change.
3.2.1.1 Discussion—Aliphaticcompoundscanbestraightor
4.1.1 Vapor pressure is varied for seasonal and climatic
branched chains and saturated or unsaturated. The term ali-
changes by providing three vapor pressure classes for M70-
phatic ether, as used in this specification, refers only to the
M85. The seasonal and geographic distribution for the three
saturated compounds.
vapor pressure classes is shown in Table 2. Class 1 encom-
3.2.2 fuel methanol (M70-M85)—a blend of methanol and
passes geographical areas with 6-h tenth-percentile minimum
hydrocarbonsofwhichthemethanolportionisnominally70to
ambient temperature of greater than 5°C (41°F). Class 2
85 volume% .
encompasses geographical areas with 6-h tenth-percentile
3.2.3 higher alcohols—aliphatic alcohols of the general
minimum temperatures of greater than−5°C (23°F) but less
formula C H OH with n being 2 to 8.
n 2 n+1
than+5°C. Class 3 encompasses geographical areas with 6-h
tenth-percentile minimum ambient temperature less than or
equal to−5°C.
Annual Book of ASTM Standards, Vol 14.02.
TABLE 1 Requirements for Fuel Methanol (M70-M85)
A
Properties Class 1 Class 2 Class 3
Methanol + higher alcohols, min, 84 80 70
volume%
Hydrocarbon/aliphatic ether, 14–16 14–20 14–30
volume%
Vapor pressure, kPa 48–62 62–83 83–103
(psi) 7.0–9.0 9.0–12.0 12.0–15.0
Lead, max, mg/L 2.6 2.6 3.9
Phosphorus, max, mg/L 0.2 0.3 0.4
Sulfur, max, mg/kg 160 200 300
All Classes
Higher alcohols (C –C ), max, 2
2 8
volume %
Acidity, as acetic acid, max, 50
mg/kg
Solvent washed gum content, 5
max, mg/100 mL
Unwashed gum content, max, 20
mg/100 mL
Total chlorine as chlorides, max, 2
mg/kg
Inorganic chloride, max, mg/kg 1
Water, max, mass% 0.5
Appearance This product shall be visibly free of
suspended or precipitated contaminants (clear
and bright). This shall be determined at
indoor ambient temperatures unless otherwise
agreed upon between the supplier and the
purchaser.
A
See 4.1.1 for volatility class criteria.
D 5797 – 96 (2001)
TABLE 2 Seasonal and Geographical Volatility Specifications for Fuel Methanol (M70-M85)
NOTE 1—This schedule subject to agreement between the purchaser and the seller denotes the vapor pressure class of the fuel at the time and place
of bulk delivery to fuel dispensing facilities for the end user. Shipments should anticipate this schedule.
State January February March April May June July August September October November December
Alabama 2222 2/1 1111 1/2 2 2
Alaska
Southern Region 3333 3/2 2/1 1 1/2 2/3 333
South Mainland 3333 3/2 2/1 1/2 2 2/3 333
Arizona
N of 34° Latitude 3 3 3 3/2 2 2/1 1 1 1/2 2/3 3 3
Sof34°Latitude 222 2/1 11111 1/2 2 2
Arkansas 3 3 3/2 2/1 1111 1/2 2 2/3 3
A
California
North Coast 22222 2/1 111 1/2 2 2
South Coast 3/2 2 2 2 2/1 1111 1/2 2/3 3
Southeast 3 3/2 2 2 2/1 1 1 1 1/2 2 2/3 3
Interior 22222 2/1 111 1/2 2 2
Colorado
E of 105° Longitude 3 3 3 3/2 2 2/1 1 1 1/2 2/3 3 3
W of 105° Longitude 3333 3/2 2 2/1 1/2 2/3 333
Connecticut 3 3 3 3/2 2 2/1 1 1 1/2 2 2/3 3
Delaware 3 3 3/2 2 2/1 1 1 1 1/2 2 2/3 3
District of Columbia 3 3 3/2 2 2/1 1 1 1 1/2 2 2/3 3
Florida
Nof29°Latitude 222 2/1 11111 1/2 2 2
Sof29°Latitude 2 2/1 11111111 1/2 2
Georgia 3 3/2 2 2/1 11111 1/2 2 2/3
Hawaii 111111111111
Idaho 3 3 3 3/2 2 2 2/1 1/2 2 2/3 3 3
Illinois
N of 40° Latitude 3 3 3 3/2 2 2/1 1 1 1/2 2/3 3 3
S of 40° Latitude 3 3 3 3/2 2/1 1 1 1 1/2 2/3 3 3
Indiana 3 3 3 3/2 2/1 1 1 1 1/2 2/3 3 3
Iowa 3 3 3 3/2 2 2/1 1 1 1/2 2/3 3 3
Kansas 3 3 3 3/2 2 2/1 1 1 1/2 2/3 3 3
Kentucky 3 3 3/2 2 2/1 1 1 1 1/2 2 2/3 3
Louisiana 2 2 2 2/1 11111 1/2 2 2
Maine 3 3 3 3/2 2 2/1 1 1/2 2 2/3 3 3
Maryland 3 3 3/2 2 2/1 1 1 1 1/2 2 2/3 3
Massachusetts 3 3 3 3/2 2 2/1 1 1 1/2 2 2/3 3
Michigan
Lower Michigan 3 3 3 3/2 2 2/1 1 1/2 2 2/3 3 3
Upper Michigan 3333 3/2 2/1 1 1/2 2 2/3 33
Minnesota 3333 3/2 2/1 1 1/2 2 2/3 33
Mississippi 222 2/1 11111 1/2 2 2
Missouri 3 3 3 3/2 2/1 1 1 1 1/2 2/3 3 3
Montana 3333 3/2 2 2/1 1/2 2/3 333
Nebraska 3 3 3 3/2 2 2/1 1 1/2 2 2/3 3 3
Nevada
N of 38° Latitude 3 3 3 3/2 2 2 2/1 1/2 2 2/3 3 3
S of 38° Latitude 3 3 3/2 2 2/1 1 1 1 1/2 2 2/3 3
New Hampshire 3 3 3 3/2 2 2/1 1 1/2 2 2/3 3 3
New Jersey 3 3 3/2 2 2/1 1 1 1 1/2 2 2/3 3
New Mexico
N of 34° Latitude 3 3 3 3/2 2 2/1 1 1 1/2 2/3 3 3
Sof34°Latitude 33 3/2 2/1 11111 1/2 2/3 3
New York
N of 42° Latitude 3 3 3 3/2 2 2/1 1 1/2 2 2/3 3 3
S of 42° Latitude 3 3 3 3/2 2/1 1 1 1 1/2 2 2/3 3
North Carolina 3 3 3/2 2 2/1 1 1 1 1/2 2/3 3 3
North Dakota 3333 3/2 2/1 1 1/2 2 2/3 33
Ohio 333 3/2 2/1 111 1/2 2/3 33
Oklahoma 3 3 3 3/2 2/1 1 1 1 1/2 2 2/3 3
Oregon
E of 122° Longitude 3 3 3 3/2 2 2 2/1 1/2 2 2/3 3 3
W of 122° Longitude 3 3/2 2 2 2 2/1 1 1 1/2 2 2 2/3
Pennsylvania
N of 41° Latitude 3 3 3 3/2 2 2/1 1 1/2 2 2/3 3 3
S of 41° Latitude 3 3 3 3/2 2 2/1 1 1 1/2 2 2/3 3
Rhode Island 3 3 3 3/2 2/1 1 1 1 1/2 2 2/3 3
South Carolina 2 2 2 2/1 11111 1/2 2 2
South Dakota 3 3 3 3/2 2 2/1 1 1/2 2 2/3 3 3
Tennessee 3 3 3/2 2 2/1 1 1 1 1/2 2 2/3 3
Texas
N of 31° Latitude 3 3 3/2 2 2/1 1 1 1 1/2 2 2/3 3
D 5797 – 96 (2001)
TABLE 2 Continued
State January February March April May June July August September October November December
Sof31°Latitude 222 2/1 11111 1/2 2 2
Utah 3 3 3 3/2 2 2/1 1 1 1/2 2/3 3 3
Vermont 3 3 3 3/2 2 2/1 1 1/2 2 2/3 3 3
Virginia 3 3 3/2 2 2/1 1 1 1 1/2 2 2/3 3
Washington
E of 122° Longitude 3 3 3/2 2 2 2/1 1 1 1/2 2/3 3 3
W of 122° Longitude 3 3/2 2 2 2 2/1 1 1 1/2 2 2 2/3
West Virginia 3 3 3 3/2 2 2/1 1 1/2 2 2/3 3 3
Wisconsin 3 3 3 3/2 2 2/1 1 1/2 2 2/3 3 3
Wyoming 3333 3/2 2 2/1 1/2 2 2/3 33
A
Details of State Climatological Division by county as indicated:
California, North Coast—Alameda, Contra Costa, Del Norte, Humbolt, Lake, Marin, Mendocino, Monterey, Napa, San Benito, San Francisco, San Mateo, Santa Clara,
Santa Cruz, Solano, Sonoma, Trinity
California, Interior—Lassen, Modoc, Plumas, Sierra, Siskiyou, Alpine, Amador, Butte, Calaveras, Colusa, El Dorado, Fresno, Glenn, Kern (except that portion lying east
of Los Angeles County Aqueduct), Kings, Madera, Mariposa, Marced, Placer, Sacramento, San Joaquin, Shasta, Stanislaus, Sutter, Tehama, Tulare, Tuolumne, Yolo, Yuba,
Nevada
California, South Coast—Orange, San Diego, San Luis Obispo, Santa Barbara, Ventura, Los Angeles (except that portion north of the San Gabriel Mountain range and
east of the Los Angeles County Aqueduct)
California, Southeast—Imperial, Riverside, San Bernadino, Los Angeles (that portion north of the San Gabriel Mountain range and east of the Los Angeles County
Aqueduct), Mono, Inyo, Kern (that portion lying east of the Los Angeles County Aqueduct)
4.1.2 The hydrocarbons used shall have a final maximum 6.1.1 Methanol—A procedure for a test method for metha-
boilingpointof225°C(437°F)byTestMethodD86,oxidation
nol content of fuel methanol (M70-M85) is included asAnnex
stability of 240-min minimum byTest Method D525, and No. A1. Verification of the appropriateness of this test method has
1 maximum copper strip corrosion byTest Method D130.The
indicated that the precision of this method may not be
hydrocarbons may contain aliphatic ethers as blending compo-
adequate.As work continues to develop a method, this proce-
nents as are customarily used for automotive fuel.
dure remains the best available.
4.1.3 Use of unprotected aluminum in fuel methanol (M70-
6.1.2 Hydrocarbon/Aliphatic Ether—Use Test Method
M85) distribution and dispensing equipment will introduce
D4815 to determine higher alcohols, methyl tert-butyl ether
insoluble aluminum compounds into the fuel causing plugged
(MTBE),andotherethers.Watermayalsobedeterminedifthe
vehicle fuel filters. Furthermore, this effect can be exaggerated
gas chromatograph is equipped with a thermal conductivity
even with protected aluminum by elevated fuel conductivity
detector.Asanalternative,watercanbedeterminedbytheKarl
caused by contact with a nitrile rubber dispensing hose.
Fischertestmethod(see6.1.9).Theconcentrationofmethanol,
Therefore, unprotected aluminum and an unlined nitrile rubber
otheralcohols,andwatercanbeadded,andthesumsubtracted
dispensing hose should be avoided in fuel methanol (M70-
from 100 to get the percent of hydrocarbons/aliphatic ethers.
M85) distribution and dispensing systems.
An alternative test method is contained in Annex A2.
5. Sampling 6.1.3 Vapor Pressure— Test Methods D4953, D5190, or
D5191.
5.1 Sample in accordance with Practice D4057, except that
water displacement (10.3.1.8 of Practice D4057) shall not be 6.1.4 Acidity—Test Method D1613.
used.
6.1.5 Gum Content, Solvent Washed and Unwashed—Test
5.2 Where practical, M70-M85 should be sampled in glass
Method D381.
containers.Ifsamplesmustbecollectedinmetalcontainers,do
6.1.6 Total Chlorine as Chloride—Test Methods D4929,
notusesolderedmetalcontainers.Thisisbecausethesoldering
Method B.
flu
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