ASTM D2358-16
(Test Method)Standard Test Method for Separation of Active Ingredient from Surfactant and Syndet Compositions
Standard Test Method for Separation of Active Ingredient from Surfactant and Syndet Compositions
ABSTRACT
This test method covers the procedure for the separation and purification of active ingredient from surfactants and syndet compositions. The separated active ingredient may be used for qualitative examinations. The method also permits the estimation of total active ingredient level present in the sample under test. The method method yields the active ingredient together with other alcohol-soluble materials and therefore is useful only in estimating the actual active ingredient level.
SCOPE
1.1 This test method covers the procedure for the separation and purification of active ingredient from surfactants and syndet compositions. The separated active ingredient may be used for qualitative examinations. This test method also permits the estimation of total active ingredient level present in the sample under test.
1.2 This test method yields the active ingredient together with other alcohol-soluble materials and therefore is useful only in estimating the actual active ingredient level. Correction for the amount of the most common contaminant, sodium chloride, is shown by a separate determination.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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
Relations
Buy Standard
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: D2358 − 16
Standard Test Method for
Separation of Active Ingredient from Surfactant and Syndet
1
Compositions
This standard is issued under the fixed designation D2358; 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 of the alcoholic extract to a known volume and the evaporation
of a suitable aliquot permits measurement of total alcohol-
1.1 This test method covers the procedure for the separation
soluble matter. An estimation of sodium chloride content is
and purification of active ingredient from surfactants and
made so that a corrected total active ingredient level may be
syndet compositions. The separated active ingredient may be
obtained. Provision is made for purification of the active
used for qualitative examinations. This test method also
ingredients in Section 13.
permits the estimation of total active ingredient level present in
the sample under test. 3.2 Purity of Reagents:
3.2.1 Reagent grade chemicals shall be used in all tests.
1.2 This test method yields the active ingredient together
Unless otherwise indicated, it is intended that all reagents shall
with other alcohol-soluble materials and therefore is useful
conform to the specifications of the Committee on Analytical
only in estimating the actual active ingredient level. Correction
Reagents of the American Chemical Society, where such
for the amount of the most common contaminant, sodium
3
specifications are available. Other grades may be used, pro-
chloride, is shown by a separate determination.
vided it is first ascertained that the reagent is of sufficiently
1.3 The values stated in SI units are to be regarded as
high purity to permit its use without lessening the accuracy of
standard. No other units of measurement are included in this
the determination.
standard.
3.3 Unless otherwise indicated, references to water shall be
1.4 This standard does not purport to address all of the
understood to mean distilled water or water of equal purity.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
SEPARATION OF TOTAL ALCOHOL-SOLUBLE
priate safety and health practices and determine the applica-
MATTER
bility of regulatory limitations prior to use. Material Safety
4. Reagents
Data Sheets are available for reagents and materials. Review
them for hazards prior to usage.
4.1 Ethyl Alcohol (95 percent)—Freshlyboiledethylalcohol
conforming to Formula No. 3A or No. 30 of the U. S. Bureau
2. Referenced Documents
of Internal Revenue. The alcohol should not be neutralized.
2
2.1 ASTM Standards:
Redistilled alcohol shall be used if alkali absorption is more
D1681 Test Method for SyntheticAnionicActive Ingredient
than 0.2 mL of 0.1 N NaOH solution/100 mL of alcohol.
in Detergents by Cationic Titration Procedure
4.2 Ethyl Alcohol (Absolute)—Freshly boiled 200-proof
ethyl alcohol conforming to either Formulas No. 3Aor No. 30
3. Summary of Test Method
of the U. S. Bureau of Internal Revenue.
3.1 The test method involves the extraction of the active
4.3 Phenolphthalein Indicator Solution (10 g/L)—Dissolve
ingredient with alcohol. Reprecipitation of the insolubles is
1 g of phenolphthalein in 50 mL of ethyl alcohol (95 %) and
specifiedtoremovethelasttracesofactiveingredient.Dilution
then mix with 50 mL of water.
4.4 Sulfuric Acid (1 + 100)—Add 1 mL of concentrated
1
This test method is under the jurisdiction of ASTM Committee D12 on Soaps
sulfuric acid (H SO , sp gr 1.84) to 100 mL of water.
and Other Detergents and is the direct responsibility of Subcommittee D12.12 on
2 4
Analysis and Specifications of Soaps, Synthetics, Detergents and their Components.
Current edition approved July 1, 2016. Published August 2016. Originally
3
approved in 1965 as D2358 – 65 T. Last previous edition approved in 2009 as Reagent Chemicals, American Chemical Society Specifications, American
D2358 – 89 (2009). DOI: 10.1520/D2358-16. Chemical Society, Washington, DC. For suggestions on the testing of reagents not
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or listed by the American Chemical Society, see Analar Standards for Laboratory
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeia
Standards volume information, refer to the standard’s Document Summary page on and National Formulary, U.S. Pharmacopeial Con
...
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: D2358 − 89 (Reapproved 2009) D2358 − 16
Standard Test Method for
Separation of Active Ingredient from Surfactant and Syndet
1
Compositions
This standard is issued under the fixed designation D2358; 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 procedure for the separation and purification of active ingredient from surfactants and syndet
compositions. The separated active ingredient may be used for qualitative examinations. This test method also permits the
estimation of total active ingredient level present in the sample under test.
1.2 This test method yields the active ingredient together with other alcohol-soluble materials and therefore is useful only in
estimating the actual active ingredient level. Correction for the amount of the most common contaminant, sodium chloride, is
shown by a separate determination.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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
2.1 ASTM Standards:
D1681 Test Method for Synthetic Anionic Active Ingredient in Detergents by Cationic Titration Procedure
3. Summary of Test Method
3.1 The test method involves the extraction of the active ingredient with alcohol. Reprecipitation of the insolubles is specified
to remove the last traces of active ingredient. Dilution of the alcoholic extract to a known volume and the evaporation of a suitable
aliquot permits measurement of total alcohol-soluble matter. An estimation of sodium chloride content is made so that a corrected
total active ingredient level may be obtained. Provision is made for purification of the active ingredients in Section 1413.
3.2 Purity of Reagents:
1
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 1965 as D2358 – 65 T. Last previous edition approved
in 20032009 as D2358 – 89 (2003).89 (2009). DOI: 10.1520/D2358-89R09.10.1520/D2358-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D2358 − 16
3.2.1 Reagent grade chemicals shall be used in all tests. Unless otherwise indicated, it is intended that all reagents shall conform
to the specifications of the Committee on Analytical Reagents of the American Chemical Society, where such specifications are
3
available. Other grades may be used, provided it is first ascertained that the reagent is of sufficiently high purity to permit its use
without lessening the accuracy of the determination.
3.3 Unless otherwise indicated, references to water shall be understood to mean distilled water or water of equal purity.
4. Reagents
4.1 Purity of Reagents:
4.1.1 Reagent grade chemicals shall be used in all tests. Unless otherwise indicated, it is intended that all reagents shall conform
to the specifications of the Committee on Analytical Reagents of the American Chemical Society, where such specifications are
3
available. Other grades may be used, provided it is first ascertained that the reagent is of sufficiently high purity to permit its use
without lessening the accuracy of the determination.
4.2 Unless otherwise indicated, references to water shall be understood to mean distilled water or water of equal purity.
SEPARATION OF TOTAL ALCOHOL-SOLUBLE MATTER
SEPARATION OF TOTAL ALCOHOL-SOLUBLE MATTER
4
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.