Сульфат натрия технический. Определение содержания сульфата натрия. Гравиметрический метод
Название (англ.):
Sodium sulphate for industrial use; Determination of sodium sulphate content; Gravimetric method
Описание (англ.):
Applicable to products in which not all impurities are known or determined. The methods specified in ISO 3237 cannot be applied. The principle consists in dissolution of a test portion, removal of insoluble matter, iron, aluminium and calcium from the solution and evaporation to dryness in the presence of sulphuric acid. Heating and weighing of the total amount. Calculation of the sodiumsulphate content by subtraction of the amount arising from any sodium chloride and sodium carbonate. Has also been approved by the IUPAC.
Дата регистрации:
01.01.78
Дата введения:
01.12.77
Дата отмены:
01.09.02
Код КГС:
Л19
Код ОКСТУ:
2141;2109
Код ОКС(МКС):
71.060.50
Код ОКП:
2141;2109
Нормативные ссылки:
NBN T 03-179-1980, EQV*NF T20-459-1980, EQV*NP-1652-1980, EQV
Ключевые слова:
DETERMINATION OF CONTENT GRAVIMETRIC ANALYSIS QUANTITATIVE ANALYSIS SODIUM SULPHATES TITRATION