The detection of the presence of sulphate of quinidine is based upon the difference in the solubilities of the oxalates of quinine and quinidine.
Otto also recommends the agitation of the fluid containing the oxalates or tartrates of the alkaloids with ether, previously to their separation by means of bicarbonate of soda.
Note 2: The reaction betweenoxalates and permanganates takes place quantitatively only in hot acid solutions.
The oxalic acid and the oxalates should be specially prepared to insure purity, the main difficulty lying in the preservation of the water of crystallization.
Note 3: The accurate quantitative separation of calcium and magnesium as oxalates requires considerable care.
Soluble oxalates readily combine with ferric, ferrous, cupric and other oxalates and interfere, more or less, with the detection of the metal ions, as the result of complex formations.
If acids, xanthines and oxalates of lime form earthy deposits along the walls of arteries and veins, these vessels harden and become inelastic, and their diameter is diminished.
The cases of oxalic poisoning have been invariably due to either oxalic acid or hydropotassic oxalate, the neutral sodic or potassic oxalates having hitherto in no instance been taken.
Rabuteau has discovered by experiment that even the oxalates of iron and copper are decomposed and separated by the kidneys.
Hyaline casts and deposits of oxalates in the urine never failed.
Both by the microscope and by chemical means it may be shown that the content of the kidney in oxalatesis large.
In all the experiments of Kobert and Kuessner, lethal doses of solubleoxalates caused the appearance of sugar in the urine.
Observations of the pathological effects of the oxalates on man have been confined to cases of death from the corrosive substances mentioned, and hence the intestinal tract has been profoundly affected.
The subjoined cuts illustrate the varieties of crystallineoxalates the most generally met with.
The solubleoxalates are easily formed by directly neutralising a solution of oxalic acid with a metallic hydrate, carbonate, or oxide; and the insoluble oxalates, by double decomposition.
Another distinctive feature is that the oxalates rarely sink to the bottom of the vessel, but are diffused through the mucous cloud, which forms in urine after a short time.
Sometimes crystalline deposits of uric acid, urates, and oxalates take place in the tubuli of the kidney and in the bladder, and lead to the nephritic and vesical irritations which are often the source of much inconvenience and pain.
Oxalates occur in the urine in sharp angular crystals and would seem to be in a high degree irritating to the tender mucous membrane of the upper part of the urethra.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "oxalates" in a variety of sentences. We hope that you will now be able to make sentences using this word.
