GB/T 6901.11-2004 Chemical analysis of silica refractories-Part11:Determination of phosphorus pentoxide-Molybdenum blue photometric method (English Version)
This part specifies the method for the determination of phosphorus pentoxide by molybdenum blue photometry. This part is applicable to the determination of phosphorus pentoxide in siliceous refractories, and the determination range (mass fraction) is 0.005% to 0.10%.
GB/T 6901.11-2004 history
2017GB/T 6901-2017 Chemical analysis of silica refractories
2008GB/T 6901-2008 Chemical analysis of silica refractories
2004GB/T 6901.11-2004 Chemical analysis of silica refractories-Part11:Determination of phosphorus pentoxide-Molybdenum blue photometric method
1986GB/T 6901.11-1986 Silica refractories--Determination of phosphorus pentoxide content--Molybdenum blue photometric method
GB/T 6901.11-2004 Chemical analysis of silica refractories-Part11:Determination of phosphorus pentoxide-Molybdenum blue photometric method was changed to GB/T 6901-2008 Chemical analysis of silica refractories.