Analysis of creams
II. Quantitative determination of drugs in creams by titration in non-aqueous solvents
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Abstract
The possibilities for the determination of active components in creams by acid-base titrations in non-aqueous solvents were investigated. Interference by cream-base components with the titration of weak organic bases and their halides with perchloric acid in acetic acid, and with the titration of weak acids with tetrabutylammonium hydroxide in N,N-dimethylformamide were studied. It appeared to be possible to determine alkaloid halides, salicylic acid, hexachlorophene and methyl salicylate without previous clean-up of the cream samples.
Keywords
Methyl Acetic Acid Hydroxide Salicylic Acid Alkaloid
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References
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© Royal Dutch Association for Advancement of Pharmacy 1982