GB/T 9984.6-2004
Sodium tripolyphosphate for industrial use---Determination of iron content---2,2'-bipyridyl spectrophotometric method (English Version)
- Standard No.
- GB/T 9984.6-2004
- Language
- Chinese, Available in English version
- Release Date
- 2004
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Status
- 2008-12
- Replace By
- GB/T 9984-2008
- Latest
- GB/T 9984-2008
- Scope
- This standard specifies the spectrophotometric method for the determination of iron content in industrial sodium tripolyphosphate. This standard applies to products with an iron content (expressed as Fe) above 0.001%.
GB/T 9984.6-2004 history
- 2008 GB/T 9984-2008 Test methods for industrial sodium tripolyphosphate
- 2004 GB/T 9984.6-2004 Sodium tripolyphosphate for industrial use---Determination of iron content---2,2'-bipyridyl spectrophotometric method
- 1988 GB/T 9984.6-1988 Determination of Industrial Sodium Iron Tripolyphosphate Content 2,2'-Bipyridyl Spectrophotometric Method
GB/T 9984.6-2004 Sodium tripolyphosphate for industrial use---Determination of iron content---2,2'-bipyridyl spectrophotometric method was changed to GB/T 9984-2008 Test methods for industrial sodium tripolyphosphate.
GB/T 9984.6-2004 -All Parts
GB/T 9984.1-2004 The measurement of whiteness for industrial sodium tripolyphosphate
GB/T 9984.10-2004 Sodium tripolyphosphate for industrial use (including foodstuffs)-Determination of oxides of nitrogen content-3,4-Xylenol spectrophotometric method
GB/T 9984.11-2004 Sodium tripolyphosphate for industrial use-Determination of I type content
GB/T 9984.2-2004 Sodium tripolyphosphate for industrial use-Determination of total phosphorus(v)oxide content-Quinoline phosphomolybdate gravimetric method
GB/T 9984.3-2004 Sodium tripolyphosphate for industrial use-Separation by ion exchange chromatography and determination of the different phosphate forms
GB/T 9984.4-2004 Sodium tripolyphosphate for industrial use-Determination of matter insoluble in water
GB/T 9984.5-2004 Sodium tripolyphosphate and Sodium pyrophosphate for industrial use-Determination of loss on ignition
GB/T 9984.6-2004 Sodium tripolyphosphate for industrial use---Determination of iron content---2,2'-bipyridyl spectrophotometric method
GB/T 9984.7-2004 Sodium tripolyphosphate for industrial use-Measurement of pH-Potentiometric method
GB/T 9984.8-2004 Sodium tripolyphosphate for industrial use-Determination of particle size
GB/T 9984.9-2004 Industrial sodium tripolyphosphate-Determination of apparent density-Method by measuring the mass of a given volume