Sodium metatungstate

Preparation of Sodium Metatungstate. Place a porous clay cylinder playing the role of a diaphragm and anode vessel into a thick-walled glass beaker (Fig. 129). Pour 300 ml of a 0.1 N sodium hydroxide solution into the glass beaker, and a solution containing... 

According to Sclion cotton which has been soaked in a solution of sodium metatungstate immediately becomes blue in daylight, but the colour disappears in the dark. 

PR Formation of the monotungstate and subsequent removal of the sodium ions from the solution by ion exchange to form a dilute sodium metatungstate solution, and subsequent concentration of the solution. 

A solution of sodium metatungstate NagO 4 WO3 aq. is allowed to react with a solution containing the equivalent quantity of AgNOa. A white precipitate slowly crystallizes out. 

Sodium tungstate Sodium metatungstate 3Na,WO,.9WO,.HjO 3000 Sodium metatungstate [12141-67-2] is a non-toxic, high-density salt (5470 kg.m ) that exhibits a high solubility in water at 20 C (4000 g.dm ) which results in slightly acidic solutions (pH 6) of moderate viscosity (20 mPa) with densities up to 3100 kg.m... 

Krukowski, S.T. Sodium metatungstate a new heavy-mineral separation medium for the extraction of conodonts from insoluble residues. /. Paleontology, 62(2)(1988)314-316. 

Mt sodium metatungstate (NagH2W,204Q-29 H2O) MV methyl viologen PVS N,N, propyl sulfonate 4,4 bipyriaiunium TEA-triethanol amine. 

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