Глинозем, преимущественно используемый для производства алюминия. Определение содержания цинка. Панфотометрический метод
Название (англ.):
Aluminium oxide primarily used for the production of aluminium; Determination of zinc content; PAN photometric method
Описание (англ.):
The 1-(2-pyridilazo)-2-naphthol method is applicable to products having zinc contents in the range between0,002 % (m/m) and 0,12 % (m/m). Alkaline fusion of a test portion, and dissolution of the fused mass in nitric acid. Separation of the zinc in the form of its thiocyanate by extraction with 4-methylpentan-2-one. Re-extraction of the zinc with an aqueous hydrochloric acid solution. Formation of the PAN-zinc complex, at pH 7,5, in the presence of tartaric acid, sodium thiosulphate and 1-nitrose-2-naphthol-3,6-du
Дата введения:
01.08.81
Код КГС:
А39
Код ОКСТУ:
1711;1709
Код ОКС(МКС):
71.100.10
Код ОКП:
1711;1709
Нормативные ссылки:
NBN T 03-416-1983, EQV*NF T20-213-1973, EQV
Ключевые слова:
ALUMINIUM ALUMINIUM OXIDE CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING DETERMINATION OF CONTENT PHOTOMETRY PHOTOMETRY (CHEMICAL ANALYSIS) PRODUCTION ZINC CHEMICAL ANALYSIS AND TESTIN SPECTROCHEMICAL ANA