Пигменты и наполнители. Общие методы испытаний. Часть 4. Определение кислотности или щелочности водного экстракта
Название (англ.):
General methods of test for pigments and extenders; Part 4 : Determination of acidity or alkalinity of the aqueous extract
Описание (англ.):
The principle of the method consists in the hot extraction of the material by following the procedure specified in ISO 787/3, to the stage of obtaining a perfectly clear filtrate. The determination is carried out with indicator solution (method A). If the solution with the methyl red indicatoris yellow (alkaline), titrate it with the hydrochloric acid solution to an orange end-point; if the solution with the methyl red indicator is red (acid), titrate it with the sodium or potassium hydroxide solution to an orange end-point. The other method (method B) is the potentiometric determination. Take 100 ml of the test solution, insert the electrodes of the pH measuring device and read the pH value.
Дата введения:
01.09.81
Код КГС:
Л19
Код ОКСТУ:
2364;2309
Код ОКС(МКС):
87.060.10
Код ОКП:
2364;2309
Нормативные ссылки:
BS 3483 PART C3-1982, EQV*DIN ISO 787-4-1983, EQV*ELOT 247-1980, NEQ*NEN-ISO 787-4-1983, EQV*NF T30-034-1982, NEQ*UNI 9392(1989/UNI), EQV*UNI ISO 9392(1989/UNI), NEQ
Ключевые слова:
ACIDITY ALKALINITY CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING DETERMINATION EXTENDERS EXTRACTION METHODS EXTRACTION METHODS OF ANALYSIS PAINT EXTENDERS PAINTS PIGMENTS TESTING CHEMICAL ANALYSIS AND TESTIN EXTRACTION METHODS OF AN