4-Amino-3-methyl-5-mercapto-1,2,4-triazole as a gravimetric reagent for determination of silver in silver compounds, alloys and complexes.
A simple, convenient and accurate gravimetric method for the determination of silver is presented. 4-Amino-3-methyl-5-mercapto-1,2,4-triazole precipitates silver quantitatively from ammoniacal tartrate medium. The complex is weighed as AgC(3)H(5)N(4)S after drying at 120-30 degrees . Separation of silver from a large number of cations is described. Application of the method for quantitative analysis of alloys and complexes of silver is reported. The average relative error for the range 20-70 mg of silver is +/- 0.25% and the relative standard deviation at the 40-mg level is 0.2%.
Gadag
R V
RV
Department of Chemistry, Karnataka Regional Engineering College, Surathkal, (S.K.), P. O. Srinivasnagar, Pin 574157, India.
Gajendragad
M R
MR