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Description of ASTM-D3872 2011ASTM D3872-05-Reapproved2011Historical Standard: Standard Test Method for Ferrous Iron in Iron OxidesASTM D3872Scope 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 1—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. Keywords ferrous iron content; iron oxides; ferrous iron content; pigment; iron oxides; Black pigments; Brown iron oxide; Ferrous iron content; Iron content--paint driers; Iron oxide pigments--black (natural/synthetic); Iron oxide pigments--brown (natural/synthetic); Natural pigments; Paint pigments--specifications ICS Code ICS Number Code 71.060.20 (Oxides) DOI: 10.1520/D3872-05R11 The following editions for this book are also available...
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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