ASTM D5630-22

Standard Test Method for Ash Content in Plastics

SIGNIFICANCE AND USE
5.1 Inorganic residues from plastics ashing may be antiblock, fillers, reinforcements, catalyst residues, colorants, etc. The quantitative amounts of each are important variables of the manufacturing process.
SCOPE
1.1 This test method was developed to determine the inorganic content of plastics by destructive ashing procedures. Ash levels of 0.01 % or above are covered by this test method.  
1.2 These ashing procedures are used only to quantify the residual solids in the polymer and can not be used to identify the individual chemical components of the ash, qualitatively.  
1.3 This test method is limited to those materials (including glass) that are stable to 900°C. Test Method D2584 is recommended for unknown samples, and in instances where fusion of the inorganic portions may be of concern.  
1.4 Fluorinated polymers and polymers containing halogenated components have not been included in these procedures.  
1.5 Two procedures for determining the inorganic residue in plastics are listed as follows:  
1.5.1 Procedure A, Muffle-Furnace Technique— For 5 – 50 gram samples. Samples are flamed over a burner prior to being ashed in a muffle furnace.  
1.5.2 Procedure B, Rapid-Ash Muffle-Furnace Technique— For 2–10 gram samples. Samples are ignited and ashed in a muffle furnace.  
Note 1: For more efficient ashing, the plastic sample should be in the form of powder or pellet.
Note 2: This test method provides consistent results of filler content for a specific filler in a specific resin. However, this method may not provide the absolute filler content in all cases. This includes polymers filled with CaCO3, nano clays, and Carbon Black.
Note 3: Procedure B is equivalent to ISO 3451/1-(E), Method A.  
1.6 The values stated in SI units are to be regarded as the standard.  
1.7 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. See Section 9 for specific precautionary statements.  
1.8 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.

General Information

• Status: Published
• Publication Date: 31-Oct-2022
• ICS: 83.080.20 - Thermoplastic materials
• Technical Committee: D20 - Plastics
• Drafting Committee: D20.70 - Analytical Methods

Standards Content (Sample)

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.
Designation: D5630 − 22
Standard Test Method for
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Ash Content in Plastics
This standard is issued under the fixed designation D5630; 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.
1. Scope 1.8 This international standard was developed in accor-
dance with internationally recognized principles on standard-
1.1 This test method was developed to determine the inor-
ization established in the Decision on Principles for the
ganic content of plastics by destructive ashing procedures.Ash
Development of International Standards, Guides and Recom-
levels of 0.01 % or above are covered by this test method.
mendations issued by the World Trade Organization Technical
1.2 These ashing procedures are used only to quantify the
Barriers to Trade (TBT) Committee.
residual solids in the polymer and can not be used to identify
the individual chemical components of the ash, qualitatively. 2. Referenced Documents
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1.3 This test method is limited to those materials (including 2.1 ASTM Standards:
glass) that are stable to 900°C. Test Method D2584 is recom- D883 Terminology Relating to Plastics
mendedforunknownsamples,andininstanceswherefusionof D1600 Terminology forAbbreviatedTerms Relating to Plas-
the inorganic portions may be of concern. tics
D2584 Test Method for Ignition Loss of Cured Reinforced
1.4 Fluorinated polymers and polymers containing haloge-
Resins
nated components have not been included in these procedures.
E691 Practice for Conducting an Interlaboratory Study to
1.5 Two procedures for determining the inorganic residue in
Determine the Precision of a Test Method
plastics are listed as follows:
2.2 ISO Standard:
1.5.1 Procedure A, Muffle-Furnace Technique—For5–50
ISO 3451/1-(E) Plastics—Determination of Ash—Part 1:
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gram samples. Samples are flamed over a burner prior to being
General Methods, Method A—Direct Calcination
ashed in a muffle furnace.
3. Terminology
1.5.2 Procedure B, Rapid-Ash Muffle-Furnace Technique—
For 2–10 gram samples. Samples are ignited and ashed in a
3.1 Definitions—For definitions of plastics terms, see Ter-
muffle furnace.
minologies D883 and D1600. There are no terms in this test
method that require new or other than dictionary definitions.
NOTE 1—For more efficient ashing, the plastic sample should be in the
form of powder or pellet.
4. Summary of Test Method
NOTE 2—This test method provides consistent results of filler content
for a specific filler in a specific resin. However, this method may not
4.1 This test method is based on a loss in weight of a plastic
provide the absolute filler content in all cases. This includes polymers
sample when combusted to oxidize all organic matter.
filled with CaCO , nano clays, and Carbon Black.
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NOTE 3—Procedure B is equivalent to ISO 3451/1-(E), Method A.
5. Significance and Use
1.6 The values stated in SI units are to be regarded as the
5.1 Inorganic residues from plastics ashing may be
standard.
antiblock, fillers, reinforcements, catalyst residues, colorants,
1.7 This standard does not purport to address all of the
etc. The quantitative amounts of each are important variables
safety concerns, if any, associated with its use. It is the
of the manufacturing process.
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
6. Interferences
mine the applicability of regulatory limitations prior to use.
6.1 A flame height of over 2.5 cm from the burner is likely
See Section 9 for specific precautionary statements.
to cause a loss of fine particles.
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This test method is under the jurisdiction ofASTM Committee D20 on Plastics For referenced ASTM standards, visit the ASTM website, www.astm.org, or
and is the direct responsibility of Subcommittee D20.70 on Analytical Methods. contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Current edition approved Nov. 1, 2022. Published November 2022. Originally Standards volume information, refer to the standard’s Document Summary page on
approvedin1994.Lastpreviouseditionapprovedin2013asD5630 - 13,whichwas the ASTM website.
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withdrawn January 2022 and reinstated in November 2022. DOI: 10.1520/D5630- Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
22. 4th Floor, New York, NY 10036, http://www.ansi.org.
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