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Standard Test Method for Ferrous Iron in Iron Oxides
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STANDARD published on 1.5.2019
Designation standards: ASTM D3872-05(2019)
Publication date standards: 1.5.2019
SKU: NS-949962
The number of pages: 3
Approximate weight : 9 g (0.02 lbs)
Country: American technical standard
Category: Technical standards ASTM
Keywords:
ferrous iron content, iron oxides, pigment,, ICS Number Code 71.060.20 (Oxides), 77.080.10 (Irons)
Significance and Use | ||||||||||||
3.1 This test method may be used for production quality control or specification acceptance. |
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1. Scope | ||||||||||||
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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2. Referenced Documents | ||||||||||||
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