ASTM D5070-90(2014)

Standard Test Method for Synthetic Quaternary Ammonium Salts in Fabric Softeners by Potentiometric Titrations (Withdrawn 2023)

SIGNIFICANCE AND USE
4.1 This test method is used to determine the quaternary ammonium salts commonly found in fabric softeners. Quaternary ammonium compounds being the active ingredients in fabric softeners requires accurate determination to assess the cost and performance of such compounds.
SCOPE
1.1 This test method describes a potentiometric titration procedure for the determination of quaternary ammonium salts in fabric softeners. This test method is intended for the analysis of known quaternary ammonium salts such as the dialkyl dimethyl quaternary ammonium compound type and the diamidoamine based quaternary ammonium compound type.  
1.2 The quaternary ammonium salts conform to the structures shown in Fig. 1 and Fig. 2.  
1.3 The analytical procedure appears in the following order:    
Section  
Apparatus  
5  
Reagents  
6  
Preparation of standard reagents  
7  
Standardization of hyamine solution  
9  
Safety precautions  
8  
Procedure for determination of dialkyl dimethyl quaternaries  
10  
Procedure for determination of diamidoamine based quaternaries  
11
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 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. See 6.4, 6.6, 6.7 and Section 8 for specific warning statements.
WITHDRAWN RATIONALE
This test method described a potentiometric titration procedure for the determination of quaternary ammonium salts in fabric softeners.
Formerly under the jurisdiction of Committee D12 on Soaps and Other Detergents, this practice was withdrawn in January 2023 in accordance with section 10.6.3 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.

General Information

• Status: Withdrawn
• Publication Date: 31-Dec-2013
• Withdrawal Date: 08-Jan-2023
• ICS: 71.060.50 - Salts
• Technical Committee: D12 - Soaps and Other Detergents
• Drafting Committee: D12.12 - Analysis and Specifications of Soaps, Synthetics, Detergents and their Components

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D5070 − 90 (Reapproved 2014)
Standard Test Method for
Synthetic Quaternary Ammonium Salts in Fabric Softeners
1
by Potentiometric Titrations
This standard is issued under the fixed designation D5070; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 3. Summary of Test Method
1.1 This test method describes a potentiometric titration 3.1 Quaternary ammonium compounds present in fabric
procedureforthedeterminationofquaternaryammoniumsalts softeners,astheactivematerials,aretitratedpotentiometrically
infabricsofteners.Thistestmethodisintendedfortheanalysis in an aqueous medium with a standard solution of sodium
of known quaternary ammonium salts such as the dialkyl lauryl sulfate using a nitrate ion-selective electrode. In this
dimethyl quaternary ammonium compound type and the di- potentiometric titration, the reaction involves the formation of
amidoamine based quaternary ammonium compound type. a complex between the quaternary ammonium compound and
theanionicsurfactantwhichthenprecipitates.Attheendpoint,
1.2 The quaternary ammonium salts conform to the struc-
the nitrate ion electrode appears to respond to an excess of
tures shown in Fig. 1 and Fig. 2.
titrant with a potential change large enough to give a well
1.3 Theanalyticalprocedureappearsinthefollowingorder:
defined inflection in the titration curve. Alternatively the
Section
quaternary ammonium compound can be first complexed with
Apparatus 5
an excess of standard sodium lauryl sulfate; the excess sodium
Reagents 6
lauryl sulfate is titrated potentiometrically with standard
Preparation of standard reagents 7
3
Standardization of hyamine solution 9
Hyamine 1622.
Safety precautions 8
Procedure for determination of dialkyl dimethyl quaternaries 10
4. Significance and Use
Procedure for determination of diamidoamine based quaternaries 11
4.1 This test method is used to determine the quaternary
1.4 The values stated in SI units are to be regarded as
ammonium salts commonly found in fabric softeners. Quater-
standard. No other units of measurement are included in this
nary ammonium compounds being the active ingredients in
standard.
fabric softeners requires accurate determination to assess the
1.5 This standard does not purport to address all of the
cost and performance of such compounds.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5. Apparatus
priate safety and health practices and determine the applica-
4
5.1 AutotitrationSystem—buretwith10or20mLcapacity;
bility of regulatory limitations prior to use. See 6.4, 6.6, 6.7
5 6
magnetic stirrer; evaluating ruler.
and Section 8 for specific warning statements.
7
5.2 Electrodes—(1) nitrate specific ion electrode; (2) sur-
8 9
2. Referenced Documents
factant electrode; (3) Ag/AgCl reference electrode.
2
2.1 ASTM Standards:
3
D1193Specification for Reagent Water
The sole source of supply of Hyamine 1622 known to the committee at this
time is Gallard Schlesinger Manufacturing Corp., 584 Mineola Ave., Carle Place,
D3049Test Method for Synthetic Anionic Ingredient by
NY11514.Ifyouareawareofalternativesuppliers,pleaseprovidethisinformation
Cationic Titration
to ASTM Headquarters. Your comments will receive careful consideration at a
meeting of the responsible technical committee, which you may attend.
4
Metrohm-Brinkman E-536, or equivalent, has been found satisfactory. Avail-
1
This test method is under the jurisdiction ofASTM Committee D12 on Soaps able from Brinkman Instruments Inc., Cantiague Rd., Westbury, NY 11590.
5
and Other Detergents and is the direct responsibility of Subcommittee D12.12 on Potentiograph/E-535 and Dosimat/E-459, or equivalent, have been found
AnalysisandSpecificationsofSoaps,Synthetics,DetergentsandtheirComponents. satisfactory. Available from Brinkman Instruments Inc., Cantiague Rd., Westbury,
Current edition approved Jan. 1, 2014. Published February 2014. Originally NY 11590.
6
approvedin1990.Lastpreviouseditionapprovedin2005asD5070-90(2005).DOI: Evaluating Ruler EA-893, or equivalent, has been found satisfactory.Available
10.1520/D5070-90R14. from Brinkman Instruments Inc., Cantiague Rd., Westbury, NY 11590.
2 7
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Orion Model 93.07, or equivalent, has been found satisfactory.Available from
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Orion Research Inc., 529 Main St., Boston, MA 02129.
8
Standards volume information, refer to the standard’s Document Summary page on Orion Model 93.42, or equivale
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