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J Pharm Sci. 1977 Apr;66(4):519-22.

Solubility studies of silver sulfadiazine.


The solubility of silver sulfadiazine as a function of pH was determined in nitric acid-potassium nitrate buffer for pH 2-3 and in 2-(N-morpholino)ethanesulfonic acid buffer for pH 6-7. As the salt of a weak organic acid, silver sulfadiazine exhibits the anticipated increase in solubility with an increasing hydrogen-ion concentration. Measurement of the silver-ion concentration was carried out using a silver-ion selective electrode. The methods of known subtraction and known addition were utilized to measure the total concentration of the silver ion in solution. Evidence was obtained to indicate that the salt is completely ionized in aqueous solution.

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