Standard Test Method for Active Matter in Anionic Surfactants by Potentiometric Titration

Importancia y uso:

5.1 Anionic surfactants are the most widely used of the synthetic detergents. ASTM methods in current use for their determination involve two-phase aqueous/chloroform titrations with the organic dyes methylene blue (Test Method D1681) or disulphine blue/dimidium bromide (Test Method D3049) as indicators. One advantage of the potentiometric method is that it eliminates the use of chloroform whose use is restricted for environmental and toxicological reasons.

5.2 This test method is intended for use as described in 1.1.

Subcomité:

D12.12

Referida por:

D1768-89R24

Volúmen:

15.04

Número ICS:

71.100.40 (Surface active agents)

Palabras clave:

active matter; anionic surfactants; titration ;