ASTM D4450 Standard Test Method for Analysis of Zinc Hydroxy Phosphite Pigment
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ASTM International
Standard Test Method for Analysis of Zinc Hydroxy Phosphite Pigment
N D4450
Annotation
This test method is intended for the determination of zinc oxide and phosphorous acid content of the pigment commercially known as zinc hydroxy phosphite. The zinc content is determined by ethylenediaminetetraacetate (EDTA) titration and calculated as zinc oxide (ZnO), while the phosphorus content is determined colorimetrically and calculated as phosphorous acid (H3PO3).
The analytical procedures appear in the following order:
The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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.
Автоматический перевод:
Метод стандартной пробы для анализа пигмента фосфита гидрокси цинка
Этот метод испытаний предназначается для определения содержания оксида цинка и фосфористой кислоты пигмента, коммерчески известного как фосфит гидрокси цинка. Содержание цинка определяется ethylenediaminetetraacetate (EDTA) титрование и вычисляется как оксид цинка (ZnO), в то время как содержание фосфора определяется колориметрическим образом и вычисляется как фосфористая кислота (H3PO3).
