GB/T 19421.9-2003 Test methods of crystalline layered sodium disilicate--Potassium fluosilicate volumetric methods for determination of sodium oxide content (English Version)
This part of GB/T 19421 specifies the method for the volumetric determination of sodium oxide content in layered crystalline sodium disilicate. This section applies to the determination of sodium oxide content (30% to 40%) in layered crystalline sodium disilicate that can be used as a detergent builder.
GB/T 19421.9-2003 history
2008GB/T 19421-2008 Test methods of crystalline layered sodium disilicate
2003GB/T 19421.9-2003 Test methods of crystalline layered sodium disilicate--Potassium fluosilicate volumetric methods for determination of sodium oxide content
GB/T 19421.9-2003 Test methods of crystalline layered sodium disilicate--Potassium fluosilicate volumetric methods for determination of sodium oxide content was changed to GB/T 19421-2008 Test methods of crystalline layered sodium disilicate.