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| Название (рус.): | Борат натрия неочищенный технический. Определение общего содержания алюминия. Титриметрический метод |
| Название (англ.): | Crude sodium borates for industrial use; Determination of total aluminium content; Titrimetric method |
| Описание (англ.): | Applicable to products having a total content up to 1 %. Is not applicable in the presence of zirconium or titanium. More than 0.006 % of iron will interfere in the determination. The principle bases on fusion of a test portion with sodium carbonate and extraction of the molten mass with hydrochloric acid. Formation of a complex by the addition of the disodium salt of ethylenediamintetra-ecetic acid(EDTA). Decomposition of the complex by sodium fluoride followed by titration of the liberated EDTA with a standard volumetric solution of zinc chloride in the presence of xylenol orange as indicator. |
| Дата регистрации: | 01.04.75 |
| Дата введения: | 01.03.75 |
| Дата отмены: | 30.05.02 |
| Код КГС: | Л19 |
| Код ОКСТУ: | 2146;2109 |
| Код ОКС(МКС): | 71.060.50 |
| Код ОКП: | 2146;2109 |
| Нормативные ссылки: | BS 5688 PART 11-1979, EQV*NBN T 03-351-1981, EQV*NF T20-564-1985, EQV*NP-1434-1977, EQV |
| Ключевые слова: | ALUMINIUM BORATES CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING CHEMICALS DETERMINATION OF CONTENT SODIUM SODIUM BORATES VOLUMETRIC ANALYSIS CHEMICAL ANALYSIS AND TESTIN |
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