ASTM D4450-85(2002)
Historical Standard: ASTM D4450-85(2002) Standard Test Method for Analysis of Zinc Hydroxy Phosphite Pigment
SUPERSEDED (see Active link, below)
ASTM D4450
1. Scope
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:
| Sections | |
| Zinc oxide | 6 through 8 |
| Phosphorous acid | 9 through 14 |
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
D1193 Specification for Reagent Water
Keywords
phosphorus acid; pigment analysis; zinc; zinc hydroxy phosphite; zinc oxide;
ICS Code
ICS Number Code 87.060.10 (Pigments and extenders)
DOI: 10.1520/D4450-85R02
ASTM International is a member of CrossRef.
