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| Название (рус.): | Сульфат аммония технический. Определение содержания свободной кислотности. Титриметрический метод |
| Название (англ.): | Ammonium sulphate for industrial use; Determination of free acidity; Titrimetric method |
| Описание (англ.): | Applicable to products having a free acidity, expressed as H2 SO4 , equal to or more than 0.01 % (m/m). Dissolution of a test portion in Water and titration with standard volumetric sodium hydroxide solution in the presence of an indicator. The indicator must have a colour change in the pH range between 5.2 and 5.6. Has also been approved by the IUPAC. |
| Дата введения: | 01.04.74 |
| Код КГС: | Л19 |
| Код ОКСТУ: | 2141;2109 |
| Код ОКС(МКС): | 71.060.50 |
| Код ОКП: | 2141;2109 |
| Нормативные ссылки: | BS 3786-1964, NEQ*NBN T 03-067-1979, EQV*NP-1226-1976, EQV |
| Ключевые слова: | ACIDITY AMMONIUM COMPOUNDS AMMONIUM INORGANIC COMPOUNDS AMMONIUM SULPHATE CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING CHEMICALS MEASUREMENT VOLUMETRIC ANALYSIS AMMONIUM INORGA CHEMICAL ANALYSIS AND TESTIN |
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