ASTM D4450-85(2007)
Standard Test Method for Analysis of Zinc Hydroxy Phosphite Pigment

Standard No.

ASTM D4450-85(2007)

Release Date

1985

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D4450-85(2012)

Latest

ASTM D4450-85(2019)

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 (H3PO3).

1.2 The analytical procedures appear in the following order:

1.3 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.

ASTM D4450-85(2007) history

• 2019 ASTM D4450-85(2019) Standard Test Method for Analysis of Zinc Hydroxy Phosphite Pigment
• 1985 ASTM D4450-85(2012) Standard Test Method for Analysis of Zinc Hydroxy Phosphite Pigment
• 1985 ASTM D4450-85(2007) Standard Test Method for Analysis of Zinc Hydroxy Phosphite Pigment
• 1985 ASTM D4450-85(2002) Standard Test Method for Analysis of Zinc Hydroxy Phosphite Pigment
• 1996 ASTM D4450-85(1996) Standard Test Method for Analysis of Zinc Hydroxy Phosphite Pigment
• 1990 ASTM D4450-85(1990)e1 Standard Test Method for Analysis of Zinc Hydroxy Phosphite Pigment