scholarly journals Simultaneous Differential Determination of Inorganic Acid and Nitrate in DMF Solution by Nonaqueous Conductometric Titration with Sodium Tetrahydroborate.

2002 ◽  
Vol 51 (12) ◽  
pp. 799-805
Author(s):  
Takayoshi FUJINO ◽  
Hayao NOGUCHI
Keyword(s):  
Sodium Tetrahydroborate ◽  
Conductometric Titration ◽  
Inorganic Acid

Determination of Phenylephrine-HCl Using Conductometric Titration Method

2016 ◽  
Vol 12 (4) ◽  
pp. 330-334 ◽  
Author(s):  
Shlear H. Hasan ◽  
Nabeel S. Othman ◽  
Kafia M. Surchi
Keyword(s):  
Conductometric Titration ◽  
Titration Method

scholarly journals Spectrophotometric and Conductometric Determination of Clomiphene Citrate and Nefazodone HCl

2008 ◽  
Vol 5 (s2) ◽  
pp. 1069-1080 ◽  
Author(s):  
Wafaa S. Hassan ◽  
Mervat M. Hosny
Keyword(s):  
Spectrophotometric Method ◽  
Clomiphene Citrate ◽  
Pharmaceutical Preparations ◽  
Conductometric Titration ◽  
Ion Pair ◽  
Experimental Conditions ◽  
Relative Standard ◽  
Colored Complexes ◽  
Standard Deviations

Two accurate, rapid and simple spectrophotometric and conductometric methods were developed for the determination of clomiphene citrate (CMP) and nefazodone HCl (NFZ), the proposed methods depends upon the reaction of ammonium reineckate with the two studied drugs to form stable precipitate of ion-pair complexes, which was dissolved in suitable solvent. The pink colored complexes were determined colorimetrically at 509, 523.6 nm, respectively. Using the conductometric titration, the studied drugs could be evaluated in 50% (v/v) acetone in the range 60.02-540.18 and 63.3-443.1 μg mL-1for clomiphene citrate and nefazodone HCl, respectively. While for spectrophotometric method the ranges were 0.2-1.8 and 0.2-1.6 mg mL-1for clomiphene citrate and nefazodone HCl respectively. Various experimental conditions were studied. The results obtained showed good recoveries with relative standard deviations of 0.759 and 0.552%. The proposed procedures were applied successfully to the analysis of these drugs in their pharmaceutical preparations and the results were favourably comparable with the official and reference methods. The molar combining ratio reveal that (1:1) (drug : reagent) ion associates were formed.

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