- Standard No.
- GB/T 5687.1-1985
- Language
- Chinese
- Release Date
- 1985
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Replace By
-
GB/T 4699.2-2008
-
GB/T 5687.11-2006
- Lastest
-
GB/T 4699.2-2008
-
GB/T 5687.11-2006
- Scope
- This standard applies to the determination of chromium content in ferrochromium and ferrochromium nitride. Measuring range: 45.00 to 80.00%.
GB/T 5687.1-1985 history
- 2008 GB/T 4699.2-2008 Ferrochromium and ferrosilicochromium. Determination of chromium content. The ammonium persulfate oxidation titrimetric method and potentiometric titration method
- 1985 GB/T 5687.1-1985 Methods for chemical analysis of ferro-chromium--The ammonium persulfate oxidation volumetric method for the determination of chromium content
GB/T 5687.1-1985 Methods for chemical analysis of ferro-chromium--The ammonium persulfate oxidation volumetric method for the determination of chromium content was changed to GB/T 4699.2-2008 Ferrochromium and ferrosilicochromium. Determination of chromium content. The ammonium persulfate oxidation titrimetric method and potentiometric titration method.