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Standard Test Method for Synthetic Anionic Active Ingredient in Detergents by Cationic Titration Procedure (Withdrawn 2023)
Automaticky preložený názov:
Štandardná skúšobná metóda pre syntetických aniónových aktívnou zložkou detergentov katiónovou Titračný poriadku
NORMA vydaná dňa 1.1.2014
Označenie normy: ASTM D1681-05(2014)
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.1.2014
Kód tovaru: NS-18056
Počet strán: 7
Približná hmotnosť: 21 g (0.05 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
ICS Number Code 71.100.40 (Surface active agents)
Significance and Use | ||||||||||||
4.1 This test method determines anionic detergents commonly found in laundry, dishwashing, and other cleaning materials. Accurate determination of the anionic active substance is highly important in assessing the cost and effectiveness of such cleaning substances. |
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1. Scope | ||||||||||||
1.1 Direct titration of an anionic surfactant with a standardized cationic reagent is a simple and convenient method for the quantitative determination of the content of active ingredient. The end point is detffected by the transfer of a colored complex from an organic solvent phase to an aqueous phase. The relationship between anionic and cationic agents is not always stoichiometric, and for maximum accuracy the anionic type of interest should first be characterized and then used to standardize the cationic reagent. In most cases, however, the different anionic surfactants likely to be encountered react in the same proportions. That is, a cationic titrating solution standardized against a characterized anionic agent can be used to analyze other anionics of known molecular weights. 1.2 This test method is applicable
to alkylaryl sulfonates and fatty alkyl sulfates. Low results are
obtained with alkylbenzene sulfonates having the alkyl chain length
less than eight carbon atoms. Low results are also obtained for
alkyl sulfates with the alkyl chain length of less than twelve
carbon atoms. The anionic surfactants characterized in accordance
with Sections 1.3 The analytical procedures appear
in the following order:
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