Standard Test Method for
Iron in Paint Driers by EDTA Method1
This standard is issued under the fixed designation D 3804; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method covers the titrimetric determination of
iron in liquid iron driers soluble in isopropyl alcohol and
utilizes the disodium salt of ethylenediaminetetraacetic acid
dihydrate (EDTA).
1.2 This test method is limited to the determination of the
iron content of a liquid drier that does not contain other drier
elements. This method is not applicable to drier blends.
1.3 This standard does not purport to address all of the
safety concerns associated with its use, if any. 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.
2. Referenced Documents
2.1 ASTM Standards:
D 600 Specification for Liquid Paint Driers2
D 1193 Specification for Reagent Water3
E 180 Practice for Determining the Precision of ASTM
Methods for Analysis and Testing of Industrial and Specialty Chemicals4
E 300 Practice for Sampling Industrial Chemicals4
3. Summary of Test Method
3.1 The liquid iron drier is diluted with isopropyl alcohol
and the iron chelated with excess standard EDTA. The solution
is buffered and the excess EDTA is titrated with standard zinc
chloride solution to the Eriochrome Black T endpoint.
4. Significance and Use
4.1 This test method may be used to confirm the stated
content of a liquid iron drier soluble in isopropyl alcohol and
manufactured for use in the coatings industry. The content
determines the activity level.
5. Interferences
5.1 All cations that can be titrated with EDTA in alkaline
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