Quantity determination of O-nitro phenol compound by coupling reaction with diazotized Of P-amino benzoic acid
journal of kerbala university,
2005, Volume 1, Issue 0, Pages 314-321
AbstractDevelopment 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 .
- Article View: 74
- PDF Download: 53