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Standard Test Method for Disinfectant Quaternary Ammonium Salts by Potentiometric Titration

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Standard Test Method for Disinfectant Quaternary Ammonium Salts by Potentiometric Titration


1.1 This test method covers a potentiometric titration procedure for determining active matter in disinfectant quaternary ammonium salts. This test method is intended for the analysis of quaternary ammonium salts used as disinfectants, and only applies to the following commonly used quaternary ammonium salts: -alkyldimethylbenzylammonium chloride (see Fig. 1), cetyltrimethylammonium chloride, and a blend of -octyldecyl dimethylammonium chloride, di- -octyl dimethylammonium chloride, and di -decyldimethyl ammonium chloride (see Fig. 2). Also, this test method can be applied to the analysis of disinfectant type products where the formula ingredients are known and the quaternary ammonium salt is one of the above. Interferences such as amines oxides and betaines present in disinfectant formulations were not tested.

1.2 This disinfectant quaternary ammonium salt conforms to the structures in Figs. 1 and 2.

1.3 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. For specific precautionary information, see Section 8.


Breaking strength/tenacity-paper products; "Dry zero-span tensile" test; Paper; Tension (tensile) properties/tests-paper products; Zero span tests; dry zero-span breaking strength, test,;Order Form

To find similar documents by ASTM Volume:

15.04 (Soaps and Other Detergents; Polishes; Leather; Resilient Floor Coverings)

To find similar documents by classification:

71.100.35 (Chemicals for industrial and domestic disinfection purposes Medical disinfectants and antiseptics, see 11.080.20)

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Document Number


Revision Level




Modification Type


Publication Date

Oct. 10, 1995

Document Type

Test Method

Page Count

4 pages

Committee Number