Solubility of sodium tungstate in nitrate-nitrite melts

Journal Article · Mon Oct 10 00:00:00 EDT 1988 · J. Appl. Chem. USSR (Engl. Transl.); (United States)

OSTI ID:6086467

Yurkinskii, V P; Firsova, E G; Morachevskii, A G; Sazanova, O B

Nitrate melts are employed as electrolytes for the electrochemical oxidation of tungsten. The authors studied the solubility of sodium tungstate in a number of nitrate-nitrite melts. The investigations were carried out in individual melts of NaNO/sub 3/ and NaNO/sub 2/ and in LiNO/sub 3/-NaNO/sub 3/-KNO/sub 3/ and NaNO/sub 3/-KNO/sub 3/ eutectic mixtures in the 440-690 K temperature range in an atmosphere of argon. The solubility of sodium tungstate increases slightly upon the transition from an LiNO/sub 3/-NaNO/sub 3/-KNO/sub 3/ melt to an NaNO/sub 3/-KNO/sub 3/ melt. The solubility of Na/sub 2/WO/sub 4/ in sodium nitrite is considerably higher than that in sodium nitrate.

• OSTI ID: 6086467
• Journal Information: J. Appl. Chem. USSR (Engl. Transl.); (United States), Vol. 61:4; Other Information: Translated from Zh. Prikl. Khim.; 61: No. 4, 877-878(Apr 1988)
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
SODIUM TUNGSTATES
SOLUBILITY
TUNGSTEN
OXIDATION
COMPARATIVE EVALUATIONS
DISSOLUTION
ELECTROCHEMISTRY
ELECTROLYTES
LEAST SQUARE FIT
LITHIUM NITRATES
MOLTEN SALTS
NITRITES
POTASSIUM NITRATES
QUANTITY RATIO
SATURATION
SODIUM NITRATES
TEMPERATURE DEPENDENCE
ALKALI METAL COMPOUNDS
CHEMICAL REACTIONS
CHEMISTRY
ELEMENTS
LITHIUM COMPOUNDS
MAXIMUM-LIKELIHOOD FIT
METALS
NITRATES
NITROGEN COMPOUNDS
NUMERICAL SOLUTION
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
SALTS
SODIUM COMPOUNDS
TRANSITION ELEMENTS
TUNGSTATES
360602* - Other Materials- Structure & Phase Studies
360105 - Metals & Alloys- Corrosion & Erosion