EDTA (ethylenediaminetetraacetic acid) is a hexadentate ligand that can donate six pairs of electrons to form coordinate bonds with metal ions. It acts as a chelating agent due to its ability to form multiple bonds with a metal ion. The basicity of EDTA is high because it can donate multiple protons to form stable complexes with metal ions.
EDTA used analytically is usually the disodium salt Na2H4Y 2H2O (372.24 g/mol), which is .... anyremaining EDTA titrant, Ca standard stock solution, and Zn unknown solution ...
EDTA is in full name writing: 'Ethylenediaminetetraacetic acid', a tetraprotic (H+) acid.It's IUPAC name is 2,2',2'',2'''-(Ethane-1,2-diyldinitrilo)-tetra-acetic acidShorthanded: H4EDT-acetate, or H4EdetateSo consequently disodium edetate is Na2H2EDT-acetate, or Na2H2Edetate, thus a 'better' name would be disodium dihydrogen edetate
The disodium salt of EDTA is preferred over EDTA because it is more soluble in water, which makes it easier to handle and use in aqueous solutions. Additionally, the disodium salt has a higher stability in a wider range of pH levels compared to EDTA alone, making it more versatile for various applications.
A full blood count EDTA is a common blood test that measures various components of your blood, including the number of red blood cells, white blood cells, and platelets. The EDTA additive is used to prevent the blood from clotting during the test, allowing for accurate measurements. This test can help diagnose conditions such as anemia, infection, and clotting disorders.
EDTA reacts to form so called 'one to one'-complexes with all bi- and tri-valent metal ions
Yes, EDTA is a bidentate ligand, meaning it can form two coordination bonds with a metal ion. The two pairs of lone electron pairs on the nitrogen atoms in the EDTA molecule allow it to coordinate with metal ions in a chelation complex.
1 mole of EDTA will chelate with 1 mole of Ca2+ ions or 1 mole of Fe2+ or Fe3+ ions.
Purple Tops are used for full blood counts (CBC test). EDTA is the abbreviation for ethylenediaminetetraacetic acid (you can see why it's abbreviated). The EDTA in purple top tubes is actually usually the potassium salt of this. It's used to keep the blood from coagulating.
EDTA forms more stable complexes with calcium than with magnesium. This is due to the higher charge density and smaller size of the calcium ion, which allows it to form stronger bonds with the EDTA molecule.
The reaction equation between Zn^2+ and EDTA is: Zn^2+ + EDTA → Zn(EDTA)^2-
Tertrasodium EDTA is a chelating and preservative agent.