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  2. Ferric EDTA - Wikipedia

    en.wikipedia.org/wiki/Ferric_edta

    Iron and ligand are absorbed separately by the plant roots whereby the highly stable ferric chelate is first reduced to the less stable ferrous chelate. [6] In horticulture, iron chelate is often referred to as 'sequestered iron' and is used as a plant tonic, often mixed with other nutrients and plant foods (e.g. seaweed).

  3. Ethylenediaminetetraacetic acid - Wikipedia

    en.wikipedia.org/wiki/Ethylenediaminetetraacetic...

    Ethylenediaminetetraacetic acid (EDTA), also called EDTA acid, is an aminopolycarboxylic acid with the formula [CH 2 N(CH 2 CO 2 H) 2] 2. This white, slightly water-soluble solid is widely used to bind to iron (Fe 2+ /Fe 3+) and calcium ions (Ca 2+), forming water-soluble complexes even at neutral pH. It is thus used to dissolve Fe- and Ca ...

  4. Chelation - Wikipedia

    en.wikipedia.org/wiki/Chelation

    Chelation using sodium calcium edetate has been approved by the U.S. Food and ... A common synthetic chelator is EDTA. ... value to the plants. EDTA is the typical ...

  5. Hoagland solution - Wikipedia

    en.wikipedia.org/wiki/Hoagland_solution

    Sprint 138 iron chelate is produced as Na-Fe-EDDHA (C 18 H 16 FeN 2 NaO 6), while Hoagland's original solution formulations contain ferric tartrate (C 12 H 12 Fe 2 O 18), but no sodium ions. [ 1 ] [ 2 ] [ 3 ] Synthesizing a sodium-free ferric EDTA complex (C 10 H 12 FeN 2 O 8 − ) in a laboratory is sometimes preferred to buying ready-made ...

  6. Tetrasodium EDTA - Wikipedia

    en.wikipedia.org/wiki/Tetrasodium_EDTA

    Tetrasodium EDTA is the salt resulting from the neutralization of ethylenediaminetetraacetic acid with four equivalents of sodium hydroxide (or an equivalent sodium base). It is a white solid that is highly soluble in water. Commercial samples are often hydrated, e.g. Na 4 EDTA. 4H 2 O. The properties of solutions produced from the anhydrous ...

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