It precipitates with tannic and phosphotungstic acids but not with picric, acetic, trichloracetic, or chromic acids.
It is not a polysaccharide because nearly completely precipitated by phosphotungstic acid, nor a soap because not precipitated by calcium salts, nor a phospho- or galactolipin because insoluble in benzine, hot or cold.
To the filtered fluid phosphotungstic acid is added in excess, the precipitate filtered, washed with water to which some phosphotungstic acid solution has been added, and, whilst still moist, rinsed into a flask.
Suzuki, Shimamura and Odake also used the phosphotungstic precipitation method and claimed to have prepared the crystalline antineuritic substance which they called oryzanin in the form of a crystalline picrate.
Funk carried this investigation farther and fractioned the phosphotungstic acid precipitate with silver nitrate, following the usual procedure for separating nitrogenous bases.
Funk for example has shown that if the phosphotungstic precipitate is treated with acetone it is possible to separate it into an acetone soluble and an acetone-insoluble fraction and that the curative fraction is in the latter.
Its basic nature seems to be well established by its behavior with phosphotungstic acid and its ready adsorption by carbons activated to take up basic substances.
On the chemical nature of substances from alcoholic extracts of various food stuffs which give a color reaction with phosphotungstic and phosphomolybdic acids.
The chemical investigation of the phosphotungsticprecipitate from rice polishings.
The fractioning of the phosphotungstic precipitate.
The reagent is prepared as follows: (1) Phosphotungstic acid 25 gm.
When the phosphotungsticacid is completely dissolved, mix the two solutions.
Scheibler has proposedPhosphotungstic acid as a precipitant.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "phosphotungstic" in a variety of sentences. We hope that you will now be able to make sentences using this word.
