This standard specifies the requirements, test methods, inspection rules and markings, packaging, storage, transportation and contract content of pure molybdenum trioxide. This standard applies to pure molybdenum trioxide prepared by ammonium molybdate roasting method and other methods.
YS/T 639-2007 Referenced Document
GB/T 1479 Metallic powders--Determination of apparent density--Part 1:Funnel method
GB/T 3249 Test method for Fisher number of metal powders and related compounds*, 2022-03-09 Update
GB/T 4325.1 Methods for chemical analysis of molybdenum.Part 1:Determination of lead content.Graphite furnace atomic absorption spectrometry*, 2013-05-09 Update
GB/T 4325.10 Methods for chemical analysis of molybdenum.Part 10:Determination of copper content.Flame atomic absorption spectrometry*, 2013-05-09 Update
GB/T 4325.11 Methods for chemical analysis of molybdenum.Part 11:Determination of aluminum content.Chromazurol S spectrophotometry and inductively coupled plasma atomic emission spectrometry*, 2013-05-09 Update
GB/T 4325.12 Methods for chemical analysis of molybdenum.Part 12:Determination of silicon content.Inductively coupled plasma atomic emission spectrometry*, 2013-05-09 Update
GB/T 4325.13 Methods for chemical analysis of molybdenum.Part 13:Determination of calcium content.Flame atomic absorption spectrometry*, 2013-05-09 Update
GB/T 4325.14 Methods for chemical analysis of molybdenum.Part 14:Determination of magnesium content.Flame atomic absorption spectrometry*, 2013-05-09 Update
GB/T 4325.15 Methods for chemical analysis of molybdenum.Part 15:Determination of sodium content.Flame atomic absorption spectrometry*, 2013-05-09 Update
GB/T 4325.16 Methods for chemical analysis of molybdenum.Part 16:Determination of potassium content.Flame atomic absorption spectrometry*, 2013-05-09 Update
GB/T 4325.17 Methods for chemical analysis of molybdenum.Part 17:Determination of titanium content.Diantipyrylmethane spectrophotometry and inductively coupled plasma atomic emission spectrometry*, 2013-05-09 Update
GB/T 4325.18 Methods for chemical analysis of molybdenum.Part 18:Determination of vanadium content.N-benzoyl-N-phenylhydroxylamine spectrophotometry and inductively coupled plasma atomic emission spectrometry*, 2013-05-09 Update
GB/T 4325.19 Methods for chemical analysis of molybdenum.Part 19:Determination of chromium content.Diphenylcarbazide spectrophotometry*, 2013-05-09 Update
GB/T 4325.2 Methods for chemical analysis of molybdenum.Part 2:Determination of cadmium content.Flame atomic absorption spectrometry*, 2013-05-09 Update
GB/T 4325.20 Methods for chemical analysis of molybdenum.Part 20:Determination of manganese content.Flame atomic absorption spectrometry*, 2013-05-09 Update
GB/T 4325.21 Methods for chemical analysis of molybdenum.Part 21:Determination of carbon content and sulfur content.High frequency combustion-infrared absorption method*, 2013-05-09 Update
GB/T 4325.22 Methods for chemical analysis of molybdenum.Part 22:Determination of phosphorus content.Molybdenum blue spectrophotometry*, 2013-05-09 Update
GB/T 4325.23 Methods for chemical analysis of molybdenum.Part 23:Determination of oxygen and nitrogen contents.Inert gas fusion-infrared absorption and thermal conductivity method*, 2013-05-09 Update
GB/T 4325.24 Method for chemical analysis of molybdenum.Part 24:Determination of tungsten content.Inductively coupled plasma atomic emission spectrometry*, 2013-05-09 Update
GB/T 4325.25 Methods for chemical analysis of molybdenum.Part 25:Determination of hydrogen content.Inert gas fusion infrared absorption method/thermal conductivity method*, 2013-05-09 Update
GB/T 4325.26 Methods for chemical analysis of molybdenum.Part 26:Determination of aluminium,magnesium,calcium,vanadium,chromium, manganese,iron,cobalt,nickel, copper,zinc,arsenic,cadmium, tin,antimony,tungsten, lead and bismuth contents.Inductively coupled plasma mass*, 2013-05-09 Update
GB/T 4325.27 Methods for chemical analysis of molybdenum--The combustion-coulometric titration method for the determination of carbon content
GB/T 4325.28 Methods for chemical analysis of molybdenum--The tetraphenyl arsonium chloride hydrochloride-thiocyanate photometric method for the determination of tungsten content
GB/T 4325.3 Methods for chemical analysis of molybdenum.Part 3:Determination of bismuth content.Atomic fluorescence spectrometry*, 2013-05-09 Update
GB/T 4325.4 Methods for chemical analysis of molybdenum.Part 4:Determination of tin content.Atomic fluorescence spectrometry*, 2013-05-09 Update
GB/T 4325.5 Methods for chemical analysis of molybdenum.Part 5:Determination of antimony content.Atomic fluorescence spectrometry*, 2013-05-09 Update
GB/T 4325.6 Methods for chemical analysis of molybdenum.Part 6:Determination of arsenic content.Atomic fluorescence spectrometry*, 2013-05-09 Update
GB/T 4325.7 Methods for chemical analysis of molybdenum.Part 7:Determination of iron content.1,10-phenanthroline spectrophotometry and inductively coupled plasma atomic emission spectrometry*, 2013-05-09 Update
GB/T 4325.8 Methods for chemical analysis of molybdenum.Part 8:Determination of cobalt content.5-CI-PADAB spectrophotometry and flame atomic absorption spectrometry*, 2013-05-09 Update
GB/T 4325.9 Methods for chemical analysis of molybdenum.Part 9:Determination of nickel content.Dimethylglyoxime spectrophotometry and flame atomic absorption spectrometry*, 2013-05-09 Update