Перборат натрия гидратированный технический. Определение содержания окиси натрия, окиси бора и активного кислорода. Волюметрический метод
Название (англ.):
Hydrated sodium perborates for industrial use; determination of sodium oxide, boric oxide and available oxygen contents; volumetric methods
Описание (англ.):
Determination of the sodium oxide content by addition of an excess of a solution of hydrochloric acid and back titration with a standard volumetric solution of sodium hydroxide in presence of methyl red/bromocresol green as indicator. Subsequent titration of the boric oxide with the standard volumetric solution of sodium hydroxide in the presence of mannitol or sorbitol, usingphenolphthalein as indicator. Determination of the available oxygen content in a test portion by titration in acid solution with a standard volumetric potassium permanganate solution. The equation for the reaction involved in the determination of available oxygen is given.
Дата введения:
01.05.72
Дата отмены:
30.05.02
Код КГС:
Л19
Код ОКСТУ:
2146;2109
Код ОКС(МКС):
71.060.50
Код ОКП:
2146;2109
Нормативные ссылки:
BS 5688 PART 4-1979, EQV*NBN T 03-344-1981, EQV*NF T20-563-1985, EQV*NP-1374-1976, EQV
Ключевые слова:
ACIDS BORATES BORIC OXIDE CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING DETERMINATION OF CONTENT OXYGEN SODIUM SODIUM BORATES SODIUM OXIDES SODIUM PERBORATE VOLUMETRIC ANALYSIS CHEMICAL ANALYSIS AND TESTIN