ASTM D5006-03
(Test Method)Standard Test Method for Measurement of Fuel System Icing Inhibitors (Ether Type) in Aviation Fuels
Standard Test Method for Measurement of Fuel System Icing Inhibitors (Ether Type) in Aviation Fuels
SIGNIFICANCE AND USE
DiEGME is miscible with water and can be readily extracted from the fuel by contact with water during shipping and in storage. Methods are therefore needed to check the additive content in the fuel to ensure proper additive concentration in the aircraft.
This test method is applicable to analyses performed in the field or in a laboratory.
SCOPE
1.1 This test method covers a technique for measuring the concentration of Diethylene Glycol Monomethyl Ether (DiEGME) in aviation fuels. The HB and Brix scale refractometers are specified to determine the concentration of this fuel system icing inhibitor (FSII) by measuring the refractive index of a water extract. Precision estimates have been determined for the DiEGME additive using specific extraction ratios with a wide variety of fuel types. The extraction ratios are high enough that portable handheld refractometers can be used, but not so high as to sacrifice accuracy or linearity, or both, in the 0.01 to 0.25 vol % range of interest.
1.2 DiEGME is fully described in Specification D 4171 and in other specifications.
1.3 The values stated in SI units are to be regarded as the standard.
1.4 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.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D5006–03
Standard Test Method for
Measurement of Fuel System Icing Inhibitors (Ether Type) in
1
Aviation Fuels
This standard is issued under the fixed designation D5006; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 3. Terminology
1.1 This test method covers a technique for measuring the 3.1 Definitions of Terms Specific to This Standard:
concentration of Diethylene Glycol Monomethyl Ether (Di- 3.1.1 Brix scale—a refractometer with a refractive index
EGME) in aviation fuels. The HB and Brix scale refractome- scale calibrated to weight percent cane sugar (sucrose).
ters are specified to determine the concentration of this fuel 3.1.2 HB—a refractometer that can be used in a temperature
system icing inhibitor (FSII) by measuring the refractive index range from 18 to 35°C without incorporating a temperature
of a water extract. Precision estimates have been determined correction factor.
for the DiEGME additive using specific extraction ratios with 3.2 Acronyms:
a wide variety of fuel types. The extraction ratios are high 3.2.1 DiEGME—Diethylene Glycol Monomethyl Ether
enough that portable handheld refractometers can be used, but 3.2.2 FSII—fuel system icing inhibitor
not so high as to sacrifice accuracy or linearity, or both, in the
4. Summary of Test Method
0.01 to 0.25 vol % range of interest.
4.1 In order to determine the concentration of DiEGME in
1.2 DiEGME is fully described in Specification D4171 and
in other specifications. aviation fuel, a measured volume of fuel is extracted with a
fixed ratio of water. The extraction procedure includes suffi-
1.3 The values stated in SI units are to be regarded as the
standard. cient agitation and contacting time to ensure that equilibrium
3,4
distributionsareattained.WiththeHBrefractometer, several
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the drops of the water extract are placed on the prism face and the
responsibility of the user of this standard to establish appro- volume percent DiEGME is read directly from a custom
graduated scale printed on the reticule. If the Brix refractome-
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. ter is used, a temperature correction factor is first applied to the
reading, multiplied by 2 and divided by 100 to calculate
2. Referenced Documents
volume percent DiEGME. (Warning—Diethylene glycol
2
2.1 ASTM Standards: monomethyl ether (DiEGME), Slightly toxic material. This
D4171 Specification for Fuel System Icing Inhibitors material caused slight embryo-fetal toxicity (delayed develop-
E1 Specification for ASTM Liquid-in-Glass Thermometers ment) but no increase in birth defects in laboratory animals.
E29 Practice for Using Significant Digits in Test Data to Consult the suppliers’ material safety data sheet.)
Determine Conformance with Specifications
NOTE 1—Isopropanol is not detected because of the similarity of
isopropanol/water refractive indices, and the presence of isopropanol in
fuel containing other additives results in lower than true values.
1
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
3
D02.J0 on Aviation Fuels. The sole source of supply of the HB refractometer known to the committee at
Current edition approved Dec. 1, 2003. Published January 2004. Originally this time is Gammon Technical Products, Inc., 2300 Hwy 34, P.O. Box 400,
approved in 1989. Last previous edition approved in 2002 as D5006–02. DOI: Manasquan, NJ 08736. If you are aware of alternative suppliers, please provide this
10.1520/D5006-03. information to ASTM International Headquarters. Your comments will receive
2 1
For referenced ASTM standards, visit the ASTM website, www.astm.org, or careful consideration at a meeting of the responsible technical committee , which
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM you may attend.
4
Standards volume information, refer to the standard’s Document Summary page on After July 1, 2003, all HB refractometers provided by Gammon Technical
the ASTM website. Products will contain only the DiEGME scale on the instrument reticle.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D5006–03
5. Significance and U
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.