Iron-EDTA chelate

Ibanez, J. G. Miranda, C. Topete, J. Garcia, E. Metal Complexes and the Environment Microscale Experiments with Iron-EDTA Chelates, Chem. Educ. 2000, 5, 226-230. http //joumals.springemy.com/chedr/... 

Iron Oxides. Chelated iron oxide, using nittilotriacetic acid [139-13-9] and EDTA, has been studied as an alternative oxygen source (35). Iron oxide which is often difficult for the microbes to access, is made more available by chelating agents. 

EDTA has also been used therapeutically in agriculture to treat iron deficiency in plants, particularly fruit trees, on basic soils. Spraying with iron-EDTA solution facilitates absorption of iron into the plant through its roots, followed by breakdown of the iron chelate so that the iron becomes available to the plant76. ... 

Croft et al. [15] reported significant increases in kt when iron was chelated by DTPA, ethylenediaminetetraacetic acid (EDTA), nitrilotriacetic acid (NTA), and several aminophosphonic acids. Compared to aqueous Fe2+, increases in /cj from 1000-fold to 50,000-fold were indicated. They also note that DTPA inhibits reaction (3). Graf et al. [10] suggest that reaction (3) is completely inhibited by DTPA, EHPG, phytate, and desferal. These two studies are not entirely consistent in their findings, possibly due to the... 

A recent IPC determination of the main contaminants (bromide, iodide, sulfite, thiosulfate, thiocyanate, iron(III)-EDTA chelate, free EDTA, hydroquinone, and... 

Figure 11.13 Effects of the addition of dissolved inorganic N (NELj and NOj , 5 pM each), N-containing rainfall (collected at Morehead City, NC), iron (as EDTA-chelated and non-chelated FeCla 0.2 pM each EDTA, and the combination of NOs and EDTA-chelated FeCls) on coastal Atlantic Ocean phytoplankton communities. In situ bioassays were conducted for 5 days on seawater collected approximately 25 km SE of Beaufort, NC in the summer of 1994. Phytoplankton growth responses are reported as photosynthetic CO2 fixation and chlorophyll a accumulation. Indicates treatments were significantly (p < 0.05) from controls, using Bonferroni a posteriori comparisons of the means. See Paerl etal. (1999) for details of the experimental procedures.

EDTA, probably by chelation of metallic cofactors, inhibits alkaline phosphatase, creatine kinase, and leucine aminopeptidase activities. Because it chelates calcium and iron, EDTA is unsuitable for specimens for calcium and iron analyses using photometric or titrimetric techniques. As an... 

HANDLING CYANIDE The polyvalent ions that might interfere, such as iron and copper, are removed by forming the cyanide complexes, which are more stable than the EDTA chelates. Cyanide is very toxic and should not be handled unless you wear gloves, if you have any cuts or scratches on your hands. Do not place KCN or NaCN in any acid solution because the gas HCN is formed (weak acid being displaced by a strong acid), which is highly toxic. Cyanides in basic solution are safe, if handled properly. Have the TA present when you handle cyanide salts. THE ANTIDOTE IS AMYL NITRITE. 

Calmosine CCRIS 6795 Edathamil monosodium ferric salt EINECS 239-802-2 Feredalo sodico Feredetate de sodium Ferisan Ferric sodium edetate Ferric sodium EDTA Ferrostrane Ferrostrene Monosodium ferric EDTA Natrii feredetas NSC 5237 Sequestrene Na Fe iron chelate Sequestrene NaFe Sodium feredetate Sodium ferric EDTA Sodium iron EDTA Sodium ironedetate Sybron Sytron. Used as a source of iron, a hematinic. Crystals. 

Lactobionic acid, a major constituent of a solution used to preserve organs prior to transplantation, can chelate ferric iron (Isaacson et al. 1989). Relative to iron(III) chelated to ethylenediamine tetraacetic acid (EDTA), the lactobionic acid-iron complex is less able to participate in the Fenton reaction as measured by formaldehyde generation from dimethylsulphoxide and bleaching of p-NJ -dimetylnitrosoaniline. 

The use of the waste iron-EDTA solution is an important idea that has also been considered in the past. EDTA-containing boiler wastes have been spread on dormant alfalfa. The farm plots treated with diluted boiler wastes produced more crop than the untreated plots. This probably is due to the ammonia and iron contained in the boiler cleaning wastes. More attempts to reuse the valuable metals and "chelated micronutrients" should be investigated. 

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