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Simple and Improved Visible Spectrophotometric Method for Determination of Paracetamol Using Sodium Nitroprusside Chromogenic Reagent

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1TitleTitle of DocumentSimple and Improved Visible Spectrophotometric Method for Determination of Paracetamol Using Sodium Nitroprusside Chromogenic Reagent
2CreatorAuthor's name, affiliation, country SHIVAJI R. LABHADE1*, KAILAS R. LABHADE2 and VISHWAS B. GAIKWAD3
1Department of Chemistry, K.T.H.M. College, Gangapur Road, Shivajinagar, Nashik- 422 002, India
2Department of Chemistry, S.V.K.T. Arts, Science and Commerce College, Deolali Camp, Nashik- 422 401, India
3Director, BCUD, Savitribai Phule Pune University, Ganeshkhind, Pune-411 007, Maharashtra State, India
3SubjectDicipline(s) Chemical Science
3SubjectKeywords Paracetamol, N-acetyl-p-aminophenol, p-Aminophenol, N-nitrosyl-O-nitrosyl-p-aminophenol, Sodium nitroprusside
4DescriptionAbstract A simple, rapid and improved visible spectrophotometric method has been proposed for determination of paracetamol (N-acetyl-p-aminophenol) in bulk drug. The experiment is based on the alkaline hydrolysis of paracetamol (PCT) to p-aminophenol (PAP) at elevated temperature and subsequent derivatization of PAP with sodium nitroprusside (SNP) at room temperature to produce an intense green colored N-nitrosyl-O-nitrosyl-p-aminophenol chromophore for direct determination of PCT at 685 nm. The molar absorptivity and Sandell’s sensitivity are observed as 5.933x104 L.mol-1 .cm-1 and 0.0252 μg. cm-2 respectively for the chromophore. Beer’s law is obeyed over the concentration range of 15-120 μg with linear regression equation as A= 0.009+0.003C (μg at 10 mL dilution). The percent recovery was found in the range 100.07-100.60%. The average of relative error and relative standard deviation are observed as 0.252% and 0.406% respectively. Reaction mechanism and reaction stoichiometry of the chromophoric reaction are discussed. The parameters with regard to determination of paracetamol by proposed method are optimized. Drugs like ibuprofen, aspirin and metformin do not interfere hence the proposed method is suitable for determination of PCT impurity in the said drugs.
5PublishersOrganizing agency, location WWW Publications, India
6Contributor Sponsor(s) -
7DateDate (YYYY-MM-DD) -
8TypeStatus & genre Peer-reviewed Article
8TypeType
9FormateFile Formate PDF
10IdentifierUniform Resource Identifier Click Here
10IdentifierDigital Object Identifier
11SourceJournal/conference title; vol., no. (Year)Chemical Science Transactions, Volume  4 , Number  (2), (2015)
12LanuguageEnglish=en en
13RelationSupp.files
14Coverage -
15CopyrightCopyright and permissions
Chemical Science Transactions | Chem Sci Trans | CST | Online Chemistry Journal | Open Access
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