Surface active agents; Determination of water content; Karl Fischer method
Описание (англ.):
The Karl Fischer reagent is a solution containing anhydrous pyridinium sulphite and iodine which are converted in the presence of the slightest trace of water into pyridinium sulphate and hydroiodic acid respectively. The determination may be carried out in two ways, by determining the water in the product directly with the Karl Fischer reagent as a single solution or by determining the water by means of the iodine solution, after addinganhydrous pyridinium sulphite solution to the product. Both methods are described.
Заменён стандартами:
ISO 4317(1991.08)
Дата введения:
01.08.77
Дата отмены:
01.08.91
Нормативные ссылки:
NBN T 63-134-1980, EQV*NEN-ISO 4317-1983, EQV*NF T73-201-1978, EQV*NP-1714-1981, EQV
Ключевые слова:
CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING DETERGENTS DETERMINATION OF CONTENT KARL FISCHER REAGENT SURFACTANTS WATER CHEMICAL ANALYSIS AND TESTIN