ASTM D4662 Standard Test Methods for Polyurethane Raw Materials: Determination of Acid and Alkalinity Numbers of Polyols
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ASTM International
Standard Test Methods for Polyurethane Raw Materials: Determination of Acid and Alkalinity Numbers of Polyols
N D4662
Annotation
These test methods measure the acidic and basic constituents in polyols and other materials of high acidity or alkalinity that are soluble in mixtures of toluene and ethyl alcohol. These test methods do not apply to polyethers. (See Note 1.)
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
NOTE 1—There is no known ISO equivalent to this standard.
*A Summary of Changes section appears at the end of this standard
Автоматический перевод:
Методы стандартной пробы для сырья полиуретана: определение кислоты и числа щелочности полиолов
Эти методы испытаний измеряют кислые и базовые компоненты в полиолах и других материалах высокой кислотности или щелочности, которые растворимы в смесях толуола и этиловом спирте. Эти методы испытаний не относятся к простым полиэфирам. (См. Примечание 1.)
