ASTM D3872-05(2011)
Standard Test Method for Ferrous Iron in Iron Oxides

Standard No.
ASTM D3872-05(2011)
Release Date
2005
Published By
American Society for Testing and Materials (ASTM)
Status
Replace By
ASTM D3872-05(2019)
Latest
ASTM D3872-05(2019)
Scope

This test method may be used for production quality control or specification acceptance.

1.1 This test method covers the quantitative determination of ferrous oxide (FeO) by oxidation of ferrous iron (Fe++) in an acid solution to the ferric state (Fe+++) and titration with potassium dichromate using diphenylamine as the indicator.

1.2 This test method is applicable to synthetic black iron oxide, natural black iron oxide, magnetite or brown iron oxide where part of the iron content is present in the ferrous state (Note 1). It is applicable to iron oxides where the ferrous iron content ranges from 50 to 0.20 %.

Note 18212;Natural iron oxides and magnetite may contain traces of metallic iron that will be combined with and analyzed as FeO.

1.3 This standard does not purport to address the safety concerns if any, problems 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 D3872-05(2011) Referenced Document

  • ASTM D1193 Standard Specification for Reagent Water
  • ASTM D280 Standard Test Methods for Hygroscopic Moisture (and Other Matter Volatile Under the Test Conditions) in Pigments
  • ASTM D3722 Standard Specification for Natural Red and Brown Iron Oxide Pigments
  • ASTM D3724 Standard Specification for Synthetic Brown Iron Oxide Pigment
  • ASTM D50 Standard Test Methods for Chemical Analysis of Yellow, Orange, Red, and Brown Pigments Containing Iron and Manganese
  • ASTM D769 Standard Specification for Black Synthetic Iron Oxide

ASTM D3872-05(2011) history

Standard Test Method for Ferrous Iron in Iron Oxides


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