Assertion: aldohexose's group | /r/MadeOf | inorganic acids
Facets:
Source sentences:
text: A method for obtaining substantially molybdenum free ammonium paratungstate from molybdenum-containing aqueous solutions of tungsten which comprises providing said bolybdenutn-containing aqueous solution of tungsten having a tungsten concentration proportional to at least 5 grams tungstic oxide per liter of said solution, adjusting the pH of said solution to and maintaining the pH of said solution at a pH of from 7.0 to 9.0 with at least one material selected from the group consisting of inorganic acids and inorganic bases and adding to said solution at least one material selected from the group consisting of ammonium chloride and ammonium sulfate to cause precipitation of ammonium paratungstate substantially free of molybdenum contaminant.