Кислота азотная техническая. Определение соединений трехвалентного азота. Титриметрический метод
Название (англ.):
Nitric acid for industrial use; Determination of nitrous compounds; Titrimetric method
Описание (англ.):
Two cases are considered: content of nitrous compounds, expressed as HNO2, equal to or greater than 0,01 % (m/m) and content of nitrous compounds, expressed as HNO2, less than 0,01 % (m/m). The principle consists in oxidatiuon of the compounds present in a test portion by an excess of standard volumetric potassium permanganate solution. Addition of an excess of a standard volumetric iron(II)sulphate solution, and titration of this excess with a standard volumetric potassium permanganate solution. Replaces ISO Recommendation R 1981-1971.
Дата введения:
01.11.77
Дата отмены:
30.05.02
Код КГС:
Л19
Код ОКСТУ:
2121;2109
Код ОКС(МКС):
71.060.30
Код ОКП:
2121;2109
Нормативные ссылки:
NBN T 03-037-1979, EQV*NF T20-283-1968, EQV
Ключевые слова:
CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING CONNECTIONS DETERMINATION OF CONTENT NITRIC ACID NITROUS COMPOUNDS TITRATION CHEMICAL ANALYSIS AND TESTIN