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Last Updated: Feb 26, 2026
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ASTM D494-11(2019)
Standard Test Method for Acetone Extraction of Phenolic Molded or Laminated Products (Withdrawn 2026)
Standard Test Method for Acetone Extraction of Phenolic Molded or Laminated Products (Withdrawn 2026)
D0494-11R19
ASTM|D0494-11R19|en-US
Standard Test Method for Acetone Extraction of Phenolic Molded or Laminated Products (Withdrawn 2026)
Standard
D494 Standard Test Method for Acetone Extraction of Phenolic Molded or Laminated Products (Withdrawn 2026)>
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BOS Vol. 08.01 Committee D20
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Significance and Use
4.1 For molded phenolic products, acetone extraction shall be considered solely as a quantitative expression of a property normally associated with degree of cure. There is no demonstrably rigorous relation between the optimum mechanical and electrical properties of a well-cured piece and the numerical value of the acetone test. The amount of acetone-soluble matter is affected by: (1) nature of resin and filler, (2) lubricant, (3) molding temperature, (4) length of cure, (5) thickness of the section from which sample is taken, (6) nature of molded piece, (7) technique used in molding, (8) distribution of fines in the material to be extracted, and (9) method of grinding the specimen. These variations under some conditions will cause a difference of 3 to 4 % in acetone-extractable matter. For this reason, the test method shall be used only as a comparative test for measuring undercure.
4.2 For laminated phenolic products, acetone extraction indicates change in stage of cure, change in resin content, change in type of resin used, presence of plasticizers or other acetone-extractable addition agents, and is affected in general by the same factors as stated in 6.1
Scope
1.1 This test method covers the determination of the amount of acetone-soluble matter in molded or laminated phenolic products.
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
Note 1: This test method is similar to ISO 308.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.