GB/T 11213.4-1989
Sodium hydroxide for chemical fiber use--Determination of silicon mass fraction--Reduced molybdo silicate spectrometric method (English Version)
- Standard No.
- GB/T 11213.4-1989
- Language
- Chinese, Available in English version
- Release Date
- 1989
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Status
- 2007-06
- Replace By
- GB/T 11213.4-2006
- Latest
- GB/T 11213.4-2006
- Scope
- This standard specifies the method for the determination of silicon content in sodium hydroxide for chemical fiber. This method is applicable to products whose silicon content (calculated as SiO2) in sodium hydroxide is greater than or equal to 0.0005%.
GB/T 11213.4-1989 history
- 2006 GB/T 11213.4-2006 Sodium hydroxide for chemical fiber use.Determination of silicon content.Reduced molybdosilicate spectrophotometric method
- 1989 GB/T 11213.4-1989 Sodium hydroxide for chemical fiber use--Determination of silicon mass fraction--Reduced molybdo silicate spectrometric method
GB/T 11213.4-1989 -All Parts
GB/T 11213.1-2007 Sodium hydroxide for chemical fiber use.Determination of sodium hydroxide content
GB/T 11213.2-2007 Sodium hydroxide for chemical fiber use.Determination of sodium chloride content.Spectrometric method
GB/T 11213.3-2003 Sodium hydroxide for chemical fiber use--Determination of the calcium content--EDTA complexometric method
GB/T 11213.4-2006 Sodium hydroxide for chemical fiber use.Determination of silicon content.Reduced molybdosilicate spectrophotometric method
GB/T 11213.5-2006 Sodium hydroxide for chemical fiber use.Determination of sulphate content
GB/T 11213.6-1989 Sodium hydroxide for chemical fiber use--Determination of sulphate mass fraction--Turbidimetric method
GB/T 11213.7-2008 Test methods of sodium hydroxide for chemical fiber use.Part7:Determination of copper content.Spectrometric method