Сера техническая. Определение кислотности. Титриметрический метод
Название (англ.):
Sulphur for industrial use; Determination of acidity; Titrimetric method
Описание (англ.):
Applicable to products having acidities, expressed as H2 SO4 , equal to or more than 0.01 % (m/m). Describes the extraction of acidic substances with a mixture of water and propan-2-ol (isopropyl alcohol). Titration of the extract with standard volumetric sodium hydroxide solution in the presence of phenolphthalein as indicator. The preparation of the sample from the laboratory sample is carried out by grinding a sufficient quantity ofthe undried material until it passes through a sieve of nominal mesh of 250 m.
Дата регистрации:
01.10.76
Дата введения:
01.09.76
Код КГС:
Л19
Код ОКСТУ:
2112;2109
Код ОКС(МКС):
71.060.10
Код ОКП:
2112;2109
Нормативные ссылки:
BS 4113-1967, NEQ*NBN T 03-384-1981, EQV*NP-1555-1978, EQV
Ключевые слова:
ACIDITY CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING CHEMICAL COMPOUNDS CONNECTIONS DETERMINATION SULPHUR VOLUMETRIC ANALYSIS CHEMICAL ANALYSIS AND TESTIN