because edta has four active sites. therefore disodium salt of edta has 2 active sites that form soluble complex with the divalent metal ions
EDTA -Ethylene Diamine Tetra Acetic acid is a very powerful chelating agent and will thus complex most metals. However, it is not very soluble in water. The disodium salt of EDTA is and thus making a solution of this is much easier. If you have a known strength solution of EDTA disodium salt, it can then be used as a titrating solution for unknown metals salts.
To prepare a 0.5 M EDTA solution, dissolve the appropriate amount of EDTA disodium salt dihydrate (molecular weight 372.24 g/mol) in water to achieve a final volume desired. For example, to make 100 mL of 0.5 M EDTA solution, you would dissolve 18.61 g of EDTA disodium salt dihydrate in water and adjust the volume to 100 mL.
To prepare 100mM EDTA solution, dissolve 37.2g of EDTA disodium salt dihydrate in 1 liter of water. Make sure the pH is adjusted to around 8.0 with sodium hydroxide or hydrochloric acid if needed. Mix well until EDTA is fully dissolved.
To prepare a 0.01 M solution of EDTA in 1000 ml, you would need 37.22 grams of EDTA disodium salt dihydrate (C10H14N2Na2O8·2H2O) or approximately 0.1 moles. Dissolve the EDTA in water and make up the volume to 1000 ml to get a 0.01 M solution.
Disodium salt refers to a compound that contains two sodium ions. It is often used in various applications, such as food additives, medications, and industrial processes. Disodium salt can come in different forms, depending on the specific compound it is paired with.
according to http://www.sciencelab.com/ all these.....Dihydrogen Magnesium Ethylenediaminetetraacetate » Edetate Calcium Disodium, FCC» Edetate Disodium Dihydrogen» Edetate Disodium TS» Edetate Disodium, Dihydrate, FCC» Edetate Disodium, Dihydrate, Reagent, ACS» Edetate Disodium, Dihydrate, USP» Edetic Acid, NF» EDTA Disodium, 0.01 M Solution» EDTA Disodium, 0.01 M Solution, w/Magnesium» EDTA Disodium, 0.05 M Solution» EDTA Disodium, 0.0575 M Solution» EDTA Disodium, 0.1 M Solution» EDTA Disodium, 0.5 M Solution» EDTA Disodium, 10% (w/v) Solution» EDTA Disodium, 2.5% (w/v) Aqueous Solution» EDTA Stabilizer Solution, 500 g/L» Ethylenediaminetetraacetate Acid Diammonium Dihydrogen Salt» Ethylenediaminetetraacetic Acid Calcium Disodium Salt» Ethylenediaminetetraacetic Acid Copper (II) Disodium Salt» Ethylenediaminetetraacetic Acid Dicalcium Salt» Ethylenediaminetetraacetic Acid Dimagnesium Salt» Ethylenediaminetetraacetic Acid Dipotassium Salt, Reagent» Ethylenediaminetetraacetic Acid Iron (III) Ammonium Salt, Solution» Ethylenediaminetetraacetic Acid Magnesium Disodium Salt» Ethylenediaminetetraacetic Acid Tetrasodium Salt, Reagent» Ethylenediaminetetraacetic Acid Tetrasodium Salt, Solution» Ethylenediaminetetraacetic Acid Tripotassium Salt, Dihydrate» Ethylenediaminetetraacetic Acid Trisodium Salt» Ethylenediaminetetraacetic Acid, Dipotassium Magnesium Salt, Dihydrate, USP» Ethylenediaminetetraacetic Acid, Iron (III) Sodium Salt» Ethylenediaminetetraacetic Acid, Powder, Reagent, ACS» Magnesium EDTA, 0.02% (w/v) Solutionhope this was helpful
NiSO4 + Na2(edta) -----> Ni(edta) + Na2SO4
To prepare a 0.05 M disodium EDTA solution, you would need to dissolve 3.72 grams of disodium EDTA dihydrate (Na2C10H14N2Na2·2H2O) in enough water to make 1 liter of solution.
EDTA -Ethylene Diamine Tetra Acetic acid is a very powerful chelating agent and will thus complex most metals. However, it is not very soluble in water. The disodium salt of EDTA is and thus making a solution of this is much easier. If you have a known strength solution of EDTA disodium salt, it can then be used as a titrating solution for unknown metals salts.
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
Used in solarcaine.
Calcium disodium EDTA is an inorganic compound. It is synthesized from ethylenediamine, formaldehyde, and sodium cyanide.
it is organic
To prepare a 0.5 M solution of disodium EDTA, you would need to calculate the molar mass of disodium EDTA (approximately 372.24 g/mol) and then use the formula: (given concentration x volume in liters) / molar mass = mass needed. So, for 0.5 M solution: (0.5 mol/L x 1 L) / 372.24 g/mol = 0.00134 kg or 1.34 g of disodium EDTA is needed.
A better alternative to zinc sulfate as a primary standard for EDTA titrations is typically disodium hydrogen phosphate dihydrate (Na2HPO4∙2H2O), also known as disodium phosphate. This compound is preferred due to its higher purity, stability, and lower tendency to form complexes with EDTA compared to zinc sulfate.
Disodium EDTA is not a preservative itself but is often used in cosmetics and personal care products to enhance the effectiveness of preservatives by reducing the presence of metal ions that can degrade them.