ASTM D5070-90(2014)
Standard Test Method for Synthetic Quaternary Ammonium Salts in Fabric Softeners by Potentiometric Titrations

Standard No.
ASTM D5070-90(2014)
Release Date
1990
Published By
American Society for Testing and Materials (ASTM)
Latest
ASTM D5070-90(2014)
Replace By
KS H ISO 9512:2013
Scope

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.

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.

Dialkyl Dimethyl Quaternaries
 
X− = chloride or methyl sulfate
R = fatty alkyl groups saturated or unsaturated, normal or branched C8 8201;−8201;C22
FIG. 1 Dialkyl Dimethyl Quaternaries
Diamidoamine Based Quarternaries
 
X− = usually methyl sulfate
R = fatty alkyl groups, saturated or unsaturated, normal or branched C 128201;−8201;C18
R1 = 2-hydroxyethyl,
8199;8199;2-hydroxypropyl
FIG. 2 Diamidoamine Based Quarternaries

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

ASTM D5070-90(2014) Referenced Document

  • ASTM D1193 Standard Specification for Reagent Water*， 1999-04-20 Update
  • ASTM D3049 Standard Test Method for Synthetic Anionic Ingredient by Cationic Titration

ASTM D5070-90(2014) history

  • 1990 ASTM D5070-90(2014) Standard Test Method for Synthetic Quaternary Ammonium Salts in Fabric Softeners by Potentiometric Titrations
  • 2005 ASTM D5070-90(2005) Standard Test Method for Synthetic Quaternary Ammonium Salts in Fabric Softeners by Potentiometric Titrations
  • 1990 ASTM D5070-90(1997) Standard Test Method for Synthetic Quaternary Ammonium Salts in Fabric Softeners by Potentiometric Titrations
Standard Test Method for Synthetic Quaternary Ammonium Salts in Fabric Softeners by Potentiometric Titrations


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