THIOGLYCOLATE INDICATOR
Product code RXSOL-62-6047-111
Thioglycolate (thioglycolic acid) is used in water testing as a powerful reducing and complexing agent to measure both dissolved and total iron.
Description
Thioglycolate (thioglycolic acid) is used in water testing as a powerful reducing and complexing agent to measure both dissolved and total iron. It works by reducing insoluble ferric iron (Fe³⁺) to ferrous iron (Fe²⁺) and binding with it to form a highly visible purple complex.
Thioglycolic acid is used for the reduction of iron(III) to iron(II), and for pH adjustment. Thus only one reagent is required for analysis.
Application
- Color Comparison: After a brief waiting period (usually 3 to 5 minutes), the color of the sample is compared against a standard color chart or measured photometrically to determine the iron level in mg/L (or ppm).
- Interferences: The formulation used in many test kits is designed to minimize interferences from other heavy metals that might be present in the water sample
Precautions
2,4,6- Tris-(2’ - Pyridyl )-s-Triazine ( TPTZ ) or also can be use like 2,4,6-Tripyridyl-s-triazine. Solution of (TPTZ), .001 M were prepared by dissolving 0.312 gram of compound in a view drops of hydrochloric acid and diluting to 1 ltr with water.
2,4,6-Tripyridyl-s-triazine solution of (TPTZ) is useful for the calorimetric determination of iron. The Intense violet colour formed by TPTZ with iron(II) is due to the ion {Fe(TPTZ)2}+2, with only two of the three pyridyl group of each TPTZ ligand attached to the Iron atom. This reagent is also used for determination of iron in silicates, burnt refractories, and limestone etc