ASTM D4171-03(2010) - 1.7.2010
 
Significance and Use

A1.3.1 Fuel system icing inhibitor performance (Type III) is based upon test results using the pure inhibitor in a specific concentration range. Impurities affect inhibitor solubility in the fuel and reduce the effective concentration. Methods are therefore needed to check additive purity to ensure adequate performance in the aircraft.

 
1. Scope

1.1 This specification covers additives for aviation fuels (see Specifications D910 and D1655) used to inhibit ice formation in aircraft fuel systems.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 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.

A1.1.1 This test method measures the purity of fuel system icing inhibitors (Type III). The test results are used to determine if the inhibitor meets the purity requirements listed in Table 2.

 
2. Referenced Documents

D93-26

Standard Test Methods for Flash Point by Pensky-Martens Closed Cup Tester

E1-14(2025)

Standard Specification for ASTM Liquid-in-Glass Thermometers

E1064-24

Standard Test Method for Water in Organic Liquids by Coulometric Karl Fischer Titration

E2251-14(2021)

Standard Specification for Liquid-in-Glass ASTM Thermometers with Low-Hazard Precision Liquids

E450-82 (1987)

Method for Measurement of Color of Low-Colored Clear Liquids Using the Hunterlab Color Difference Meter (Withdrawn 1993)

D1364-22

Standard Test Method for Water in Volatile Solvents (Karl Fischer Reagent Titration Method)

E70-24

Standard Test Method for pH of Aqueous Solutions With the Glass Electrode

E203-24

Standard Test Method for Water Using Volumetric Karl Fischer Titration

E300-03(2022)

Standard Practice for Sampling Industrial Chemicals

D1078-11(2026)

Standard Test Method for Distillation Range of Volatile Organic Liquids

D1209-25

Standard Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)

D56-22

Standard Test Method for Flash Point by Tag Closed Cup Tester

D1353-13(2021)

Standard Test Method for Nonvolatile Matter in Volatile Solvents for Use in Paint, Varnish, Lacquer, and Related Products

D1296-23

Standard Test Method for Odor of Volatile Solvents and Diluents

D268-25

Standard Guide for Sampling and Testing Volatile Solvents and Chemical Intermediates for Use in Paint and Related Coatings and Material

D891-25

Standard Test Methods for Specific Gravity, Apparent, of Liquid Industrial Chemicals

D910-26

Standard Specification for Leaded Aviation Gasolines

D1476-02

Standard Test Method for Heptane Miscibility of Lacquer Solvents

D1613-17(2023)

Standard Test Method for Acidity in Volatile Solvents and Chemical Intermediates Used in Paint, Varnish, Lacquer, and Related Products

D1655-26b

Standard Specification for Aviation Turbine Fuels (Includes all amendments and changes 8/10/2026).

D1722-09(2023)

Standard Test Method for Water Miscibility of Water-Soluble Solvents

D3828-16a(2021)

Standard Test Methods for Flash Point by Small Scale Closed Cup Tester (Includes all amendments and changes 7/26/2021).

D4052-22

Standard Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter

D5006-25

Standard Test Method for Measurement of Fuel System Icing Inhibitors (Ether Type) in Aviation Fuels

D7547-26a

Standard Specification for Hydrocarbon Unleaded Aviation Gasoline (Includes all amendments and changes 5/11/2026).