ASTM D5040-90(2021)

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: D5040 − 90 (Reapproved 2021)
Standard Test Methods for
Ash Content of Adhesives
This standard is issued under the fixed designation D5040; 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 U.S. Department of Defense.
1. Scope 2. Referenced Documents
2.1 ASTM Standards:
1.1 These test methods cover procedures used in determin-
D301 Test Methods for Soluble Cellulose Nitrate (With-
ing the ash content of adhesives. This standard is intended as a
drawn 2011)
replacement for Method 4032.1 of Federal Test Method Stan-
D907 Terminology of Adhesives
dard 175B, “Adhesives: Methods of Testing.”
D2415 Test Method for Ash in Coal Tar and Pitch
1.2 Two test methods are used:
3. Terminology
1.2.1 Test Method A is used for a starch adhesive or other
type glue, where there is no danger from the non-volatile
3.1 Definitions—Definitions of terms in this standard may
content forming a rubbery mass when ignited.
be found in Terminology D907.
1.2.2 Test Method B employs nitric acid to avoid the
non-volatile residue being transformed into a viscous foam 4. Summary of Test Methods
when ignited.
4.1 Ash content of adhesive materials is determined by
heating a sample of material to remove all of the volatile
1.3 These methods are not applicable to adhesives contain-
components. Complete oxidation and removal of all carbona-
ing decomposable salts such as zinc chloride.
ceous material may be enhanced by the addition of concen-
1.4 The values stated in SI units are to be regarded as the
trated HNO . The general method of burning the residual ash
standard. The values given in parentheses are for information
in a muffle furnace at 600 6 25°C (1112 6 45°F) for8hor
only.
until constant weight, is used.
1.5 This standard does not purport to address all of the
5. Significance and Use
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- 5.1 This test method measures the amount of inorganic
priate safety, health, and environmental practices and deter- material in the sample.
mine the applicability of regulatory limitations prior to use.
6. Apparatus
For a specific hazard statement, see 9.2.3.
1.6 This international standard was developed in accor-
6.1 Crucible, porcelain, silica or platinum with a tightly
dance with internationally recognized principles on standard- fitting lid, having a capacity of 30 to 45 mL.
ization established in the Decision on Principles for the
6.2 Evaporating Dish, porcelain, silica, or platinum, with a
Development of International Standards, Guides and Recom-
capacity of 150 mL.
mendations issued by the World Trade Organization Technical
6.2.1 Watch Glasses to cover evaporating dishes.
Barriers to Trade (TBT) Committee.
6.3 Desiccator, equipped with drying agent and tray.
6.4 Analytical Balance, sensitive to 1 mg.
6.5 Steam Bath.
1 2
These test methods are under the jurisdiction of ASTM Committee D14 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Adhesives and are the direct responsibility of Subcommittee D14.10 on Working contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Properties. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved April 1, 2021. Published April 2021. Originally the ASTM website.
approved in 1990. Last previous edition approved in 2016 as D5040 – 90 (2016). The last approved version of this historical standard is referenced on
DOI: 10.1520/D5040-90R21. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D5040 − 90 (2021)
6.6 Drying Oven, with temperature control for maintaining 9.2.3 Warning—All operations involving handling and use
temperature at 100 to 105°C (212 to 221°F). of corrosive acids are extremely dangerous. Special care
should be taken when using nitric acid.
6.7 Electric Hotplate.
6.8 Muffle Furnace, for igniting crucibles containing test 10. Calculation
specimens. Capable of maintaining desired temperature regu-
10.1 Test Method A—Calculate the ash content, C , based
A
lation (600 6 25°C (1112 6 45°F)).
on the total weight of the specimen as follows:
7. Reagents
C ,% 5 W /W 3100
A 1 2
7.1 Nitric Acid (HNO ), concentrated, sp gr 1.42.
3 where:
W = weight of ash, and
8. Test Specimens 1
W = weight of test specimen.
8.1 For each test, use 5 to6
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