ASTM-D4450 2002

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D4450-85(2002) Standard Test Method for Analysis of Zinc Hydroxy Phosphite Pigment

Published By	Publication Date	Number of Pages
ASTM	2002	3

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Categories: 87.060.10 - Pigments and extenders, ASTM

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Description

1.1 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 (H 3 PO 3 ).

1.2 The analytical procedures appear in the following order:

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.

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