Вещества поверхностно-активные анионные. Определение растворимости в воде
Название (англ.):
Anionic surface active agents; Determination of solubility in water
Описание (англ.):
Preliminary the temperatures are determined at which solutions of known concentration change on heating from being cloudy to clear and on cooling from being clear to cloudy. Two solutions of the same concentration, one being colder and cloudy and the otherbeing warmer and clear, are placed in a bath, controlled at a preliminary determined temperature and their appearance at temperature equilibrium is noted. The test is repeated at varying temperatures until the clear solution remains clear and cloudy solution cloudy.
Дата регистрации:
01.01.83
Дата введения:
01.12.82
Код КГС:
Л99
Код ОКСТУ:
2480;2409
Код ОКС(МКС):
71.100.40
Код ОКП:
2480;2409
Нормативные ссылки:
NBN T 63-151-1983, EQV*NEN-ISO 6839-1983, EQV*NF T73-250-1983, EQV*UNE 55-805-85-1985, EQV*BS 6829 PART 1 SECTION 1.6(1991/BSI), EQV