ISO 9507:1990
Iron ores; determination of total iron content; titanium(III) chloride reduction methods
- Standard No.
- ISO 9507:1990
- Release Date
- 1990
- Published By
- International Organization for Standardization (ISO)
- Status
- Latest
- ISO 9507:1990
- Scope
- This International Standard specifies two titrimetric methods, free from mercury pollution, for the determination of total iron content in iron ores, using potassium dichromate as titrant after reduction of the iron(III) by tin(II) chloride and titanium(III) chloride. The excess reductant is then oxidized by either dilute potassium dichromate (method 1) or perchloric acid (method 2). Both methods are applicable to a concentration range of 30 % (m/m) to 72 % (m/m) of iron in natural iron ores, iron ore con-centrates and agglomerates, including sinter products.
ISO 9507:1990 history
- 1990 ISO 9507:1990 Iron ores; determination of total iron content; titanium(III) chloride reduction methods
