An Automated Colorimetric Method for Determination of Free Salicylic Acid in Aspirin‐containing Products

Cullen, L.F.; Packman, D. L.; Papariello, G. J.

doi:10.1111/j.1749-6632.1968.tb11766.x

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1970

1986

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Cited by 8 publications

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“…When a solvent containing >25% ethanol was used, a brown hazy solution resulted when the ferric nitrate reagent was added. Cullen et al (12) reported that a violet color resulted with the addition of ferric nitrate. A series of tests using different percentages of ethanol was performed to obtain the violet color.…”

Section: Resultsmentioning

confidence: 99%

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Aspirin—a national survey I: Semiautomated determination of aspirin in bulk and tablet formulations and salicylic acid in tablet formulations

Juhl¹,

Kirchhoefer²

1980

Journal of Pharmaceutical Sciences

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confidence: 99%

“…The aspirin method is applicable to plain and buffered tablets, powdered composites, and bulk drug substances and is free from the influence of excipient interferences. The salicylic acid procedure is based on the method of Cullen et al (12) and can be used as a rapid screening assay. This method is applicable to plain, buffered, and pediatric aspirin tablets.…”

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confidence: 99%