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Quantity determination of O-nitro phenol compound by coupling reaction with diazotized Of P-amino benzoic acid | ||
| journal of kerbala university | ||
| Article 1, Volume 1, Issue 0, 2005, Pages 314-321 PDF (0 K) | ||
| Abstract | ||
| Development of an analytical method was used to determine O-nitro phenol compound by coupling reaction for diazotized solution of p-amino benzoic acid in the presence of buffer solution Na2HPO4 (PH= 10.8) to give a compound with a single azo dye salt having orange color soluble in water with high absortivity at a wave length 449 nm , an early study to have a perfect optimum condition was made for the determination. A calibration curve for a range of concentration (5-75)pm was taken and the value of molar absortivity was 1.5*103 L.mol-1.cm-1 with a relative standard divation more than 1.26% and a recovery 98.77% . As we study the nature of the azo dye by mole fraction method, from the practical value we found that the mole fraction of the dye compound is 1:1(phenol:p-amino benzoic acid) and the stability factor reach to 1.4*106 L.mol-1 . | ||
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