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ASTM D 3049 : 1989 : R1996 : EDT 1

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Standard Test Method for Synthetic Anionic Ingredient by Cationic Titration
Available format(s)

Hardcopy , PDF

Superseded date

09-30-2020

Language(s)

English

Published date

01-01-1996

CONTAINED IN VOL. 15.04, 2016 Defines the determination of the amount of synthetic anionic ingredient in a surfactant by direct titration with a standardized cationic reagent.

1.1 This test method covers the determination of the amount of synthetic anionic ingredient in a surfactant by direct titration with a standardized cationic reagent. The test method is a simple and convenient means for the quantitative estimation of the anionic material. The end point is detected by the transfer of a colored complex from an organic solvent phase to an aqueous phase. The colored complex is formed by the addition of a solution of dye to a solution of the anionic surfactant. This complex is soluble in the organic-solvent phase and insoluble in the aqueous phase. When this solution is titrated with a standardized solution of a cationic reagent, the dye is displaced from the colored complex and, being water-soluble, migrates to the aqueous phase. Therefore, a cationic titrating solution that has been standardized against a characterized anionic agent can be used to analyze for other anionics of known molecular mass.

1.2 This test method is applicable to alkylaryl sulfonates, alkyl sulfonates, alkyl sulfates and hydroxy-sulfates, alkyl- phenol- and fatty alcohol ethoxy-sulfates and dialkylsulfo- succinates. It applies to active materials containing one hydrophilic group per molecule.

1.3 The analytical procedures appear in the following order:

Sections Reagents 6 Primary Standard 8 Purity 8.2 Alcohols 8.3 Free Acid or Alkali 8.4 Preparation of Mixed Indicator Solution 9 Preparation of Hyamine Solution 10 Standardization of Hyamine Solution 11 General Procedure for Anionic-Active Material 12

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. A precautionary statement appears in Section 7. Material Safety Data Sheets are available for reagents and materials. Review them for hazards prior to usage.

Committee
D 12
DocumentType
Test Method
Pages
4
ProductNote
Reconfirmed EDT 1 Reconfirmed 1996
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy

ASTM D 1768 : 1989 : R2016 Standard Test Method for Sodium Alkylbenzene Sulfonate in Synthetic Detergents by Ultraviolet Absorption
ASTM D 3673 : 1989 : R2016 Standard Test Methods for Chemical Analysis of Alpha Olefin Sulfonates
ASTM D 4251 : 1989 : R2016 Standard Test Method for Active Matter in Anionic Surfactants by Potentiometric Titration
ASTM D 5070 : 1990 : R2014 Standard Test Method for Synthetic Quaternary Ammonium Salts in Fabric Softeners by Potentiometric Titrations (Withdrawn 2023)
ASTM D 5806 : 1995 : R2017 Standard Test Method for Disinfectant Quaternary Ammonium Salts by Potentiometric Titration
ASTM D 6173 : 1997 : R2014 Standard Test Method for Determination of Various Anionic Surfactant Actives by Potentiometric Titration (Withdrawn 2023)
ASTM D 820 : 1993 : R2016 Standard Test Methods for Chemical Analysis of Soaps Containing Synthetic Detergents

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