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Название (рус.): | Вещества поверхностно-активные. Определение способности к диспергированию кальциевого мыла. Ацидиметрический метод (модифицированный метод Шенфелдта) |
Название (англ.): | Surface active agents; Determination of the power to disperse calcium soap; Acidimetric method (Modified Schoenfeldt method) |
Описание (англ.): | A 0,5 % (m/m) aqueous soap solution is prepared, and after maintaining this at testing temperature for 24 h, an aliquot portion of this solution is taken. This aliquot portion is mixed with a dilute solution of the dispersing agent (surface active agent) and subsequently with a specified volume of water of known calcium hardness. The mixtureis maintained for 1 h at the testing temperature and then the calcium soap present in a aliquot portion of the lower layer is titrated with a standard volumetric solution of hydrochloric acid in the presence of bromcresol green as indicator. |
Дата регистрации: | 01.03.83 |
Дата введения: | 01.02.83 |
Код КГС: | Л29 |
Код ОКСТУ: | 2480;2409 |
Код ОКС(МКС): | 71.100.40 |
Код ОКП: | 2480;2409 |
Нормативные ссылки: | NBN T 63-148-1983, EQV*NF T73-416-1983, EQV*UNE 55-804-85-1985, EQV |
Ключевые слова: | ACIDIMETRIC ANALYSIS ACIDIMETRY CALCIUM DETERMINATION SOAPS SURFACTANTS SUSPENSIONS (CHEMICAL) SUSPENSIONS TESTING TESTS |
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