Resumen
An aliquot portion of a standard solution of sodium lauryl sulfate is titrated with a solution of the test sample, according to the direct two-phase titration procedure describes in ISO 2271. The method is applicable to solids or to aqueous solutions of the active material. The relative molecular mass of the cationic-active matter shall be known or previously determined if its content is expressed as a percentage by mass. The method is not applicable if anionic surface-active agents are present.
Ciclo de vida
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Anteriormente
RetiradaISO 2871:1973
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Ahora
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Revisada por
PublicadoISO 2871-1:2010