ASTM D5070-1990(2005)
采用电位滴定法的织物软化剂中合成季胺盐的标准试验方法

Standard Test Method for Synthetic Quaternary Ammonium Salts in Fabric Softeners by Potentiometric Titrations

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标准号

ASTM D5070-1990(2005)

发布日期

1990年

实施日期

废止日期

无

中国标准分类号

G72

国际标准分类号

71.060.50 (Salts)

发布单位

US-ASTM

适用范围

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.

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 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.