The salts as well as the solutions are yellow brown. Provided the nutrient solution in which the Fe complex will be used has a pH of at least 5.5, all the uncomplexed iron, as a result of incomplete synthesis reaction, will still change into the chelated ferric form.
Tris iron , often abbreviated Fe 3, is a ferric coordination complex featuring acetylacetonate ligands, making it one of a family of metal acetylacetonates. It is a red air stable solid that dissolves in nonpolar organic solvents.
important anal ytical par ameter s. Hydr oxytriazenes r eacts with the F e3+ and forms colour ed comple xes. The Fe comple x is detected a t λ max = 410 nm and pH range 3 4 for reagent no, 530 nm and 4 5 for reagent no , 410 nm and 4.5 5.5 for reagent , 396 nm and 3.5 5.0 for reagent , 467 nm and 2.5 3.5 for reagent no..