ASTM D502-89(2016)
(Test Method)Standard Test Method for Particle Size of Soaps and Other Detergents
Standard Test Method for Particle Size of Soaps and Other Detergents
SIGNIFICANCE AND USE
3.1 This test method assures that the particle size of soaps and detergents conforms to specifications having to do with density and packaging, among others. It also offers a means of controlling the amount of potentially hazardous very low particle size material.
SCOPE
1.1 This test method covers the determination of the particle size of soaps and other detergents by hand sieving and machine sieving methods.
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. Material Safety Data Sheets are available for reagents and materials. Review them for hazards prior to usage.
General Information
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Designation: D502 − 89 (Reapproved 2016)
Standard Test Method for
Particle Size of Soaps and Other Detergents
This standard is issued under the fixed designation D502; 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 4. Sieves
1.1 This test method covers the determination of the particle 4.1 The sieves shall conform to Specification E11.
size of soaps and other detergents by hand sieving and machine
5. Sampling
sieving methods.
5.1 Sample soaps in accordance with Test Methods D460.
1.2 The values stated in SI units are to be regarded as
5.2 Sample other detergents in accordance with Test Meth-
standard. No other units of measurement are included in this
ods D501.
standard.
1.3 This standard does not purport to address all of the
6. Procedure Using Hand-Sieving Method
safety concerns, if any, associated with its use. It is the
6.1 Use a nest of clean, dry sieves consisting of a No. 12
responsibility of the user of this standard to establish appro-
(1700-µm), No. 40 (425-µm), and a No. 100 (150-µm) sieve.
priate safety and health practices and determine the applica-
Other size sieves may be used when required by the individual
bility of regulatory limitations prior to use. Material Safety
specifications. Transfer a 100 6 0.1 g well-mixed sample
Data Sheets are available for reagents and materials. Review
without previous drying to the top sieve. Simultaneously shake
them for hazards prior to usage.
the sieves by hand with occasional tapping of the edge of the
bottom sieve on a large rubber stopper or a flat, thick piece of
2. Referenced Documents
rubber. When the portion of the soap passing through the
2.1 ASTM Standards:
bottom sieve (No. 100) is less than 0.1 g/min of shaking (this
D460 Test Methods for Sampling and Chemical Analysis of
can be well judged by sifting into a large, dark colored pan)
Soaps and Soap Products
remove the top sieve and shake separately over a clean, dark
D501 Test Methods of Sampling and Chemical Analysis of
pan to be certain that no more of the residue will pass through.
Alkaline Detergents
Place any material passing through the largest sieve on the next
E11 Specification for Woven Wire Test Sieve Cloth and Test
size sieve, using a small camel’s hair brush to remove the
Sieves
material from the catch pan. Repeat the same procedure of
sifting successively with each sieve used. Carefully weigh the
3. Significance and Use
portions retained on each sieve and the portion passing the
3.1 This test method assures that the particle size of soaps
smallest sieve.
and detergents conforms to specifications having to do with
6.2 Duplicate particle size determinations shall be made and
density and packaging, among others. It also offers a means of
the average of the two tests used in the calculations.
controlling the amount of potentially hazardous very low
particle size material.
7. Procedure Using Machine-Sieving Method
7.1 Use a nest of clean dry sieves consisting of a No. 12
This test method is under the jurisdiction of ASTM Committee D12 on Soaps
(1700-µm), No. 40 (425-µm), and a No. 100 (150-µm) sieve.
and Other Detergents and is the direct responsibility of Subcommittee D12.12 on
Other size sieves may be used when required by the individual
Analysis and Specifications of So
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D502 − 89 (Reapproved 2009) D502 − 89 (Reapproved 2016)
Standard Test Method for
Particle Size of Soaps and Other Detergents
This standard is issued under the fixed designation D502; 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
1.1 This test method covers the determination of the particle size of soaps and other detergents by hand sieving and machine
sieving methods.
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. Material Safety Data Sheets are available for reagents and materials. Review them for hazards prior to
usage.
2. Referenced Documents
2.1 ASTM Standards:
D460 Test Methods for Sampling and Chemical Analysis of Soaps and Soap Products
D501 Test Methods of Sampling and Chemical Analysis of Alkaline Detergents
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
3. Significance and Use
3.1 This test method assures that the particle size of soaps and detergents conforms to specifications having to do with density
and packaging, among others. It also offers a means of controlling the amount of potentially hazardous very low particle size
material.
4. Sieves
4.1 The sieves shall conform to Specification E11.
5. Sampling
5.1 Sample soaps in accordance with Test Methods D460.
5.2 Sample other detergents in accordance with Test Methods D501.
6. Procedure Using Hand-Sieving Method
6.1 Use a nest of clean, dry sieves consisting of a No. 12 (1700-μm), No. 40 (425-μm), and a No. 100 (150-μm) sieve. Other
size sieves may be used when required by the individual specifications. Transfer a 100 6 0.1 g well-mixed sample without previous
drying to the top sieve. Simultaneously shake the sieves by hand with occasional tapping of the edge of the bottom sieve on a large
rubber stopper or a flat, thick piece of rubber. When the portion of the soap passing through the bottom sieve (No. 100) is less than
0.1 g/min of shaking (this can be well judged by sifting into a large, dark colored pan) remove the top sieve and shake separately
over a clean, dark pan to be certain that no more of the residue will pass through. Place any material passing through the largest
sieve on the next size sieve, using a small camel’s hair brush to remove the material from the catch pan. Repeat the same procedure
of sifting successively with each sieve used. Carefully weigh the portions retained on each sieve and the portion passing the
smallest sieve.
This test method is under the jurisdiction of ASTM Committee D12 on Soaps and Other Detergents and is the direct responsibility of Subcommittee D12.12 on Analysis
and Specifications of Soaps, Synthetics, Detergents and their Components.
Current edition approved Oct. 1, 2009July 1, 2016. Published December 2009August 2016. Originally approved in 1938 as D502 – 38 T. Last previous edition approved
in 20
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