Определение содержания воды. Метод Карла Фишера (общий метод)
Название (англ.):
Determination of water. Karl Fischer method (General method)
Описание (англ.):
Two methods of titration depending on whether the end point is detected visually or electrometrically are specified. The visual method is only applicable to colourless solutions but can be used when no electrometric apparatus is available. The electrometricmethod, whether by direct titration or back-titration, is the more accurate one and for this reason recommended. The principle of the test consists in reaction of any water present in a test portion with a solution of iodine and sulphur dioxide in a pyridine/methanol mixture (Karl Fischer reagent), previously standardized by titration with an exactly known mass of water.
Дата введения:
01.12.78
Код КГС:
Л09
Код ОКСТУ:
2109;2209;2409
Код ОКС(МКС):
71.040.40
Код ОКП:
2109;2209;2409
Нормативные ссылки:
ELOT 319-1982, EQV*NBN T 02-201-1979, EQV*NF T20-052-1968, EQV*NP-3275-1986, NEQ*NS 9003-1981, NEQ*UNE 55-525-90 1R(1989/AENOR), EQV*prEN ISO 760-1995, EQV
Ключевые слова:
CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING CHEMICAL COMPOUNDS CONNECTIONS DETERMINATION OF CONTENT ELECTRO-ANALYTICAL METHODS ELECTROMETRIC ANALYSIS KARL FISCHER REAGENT VOLUMETRIC ANALYSIS WATER CHEMICAL ANALYSIS AND TESTIN ELECTRO-ANALYTICAL