Disodium ethylenediaminetetraacetate dihydrate

Ethylenediaminetetraacetic acid, disodium salt [139-33-3] Disodium ethylenediaminetetraacetate dihydrate [6381-92-6]... 

Synonyms disodium(ethylene dinitrilo)tetraacetic acid dihydrate disodium edetate dihydrate disodium dihydrogen ethylenediamine tetraacetic dihydrate EDTA-2Na dihydrate edetate disodium dihydrate N,N -i,2-ethanediylbis[N-(carboxymethyl)glycine] disodium salt dihydrate (ethylenedinitrilo)-tetraacetic acid disodium salt dihydrate ethylene bis(iminodiacetic acid) disodium salt dihydrate edetic acid disodium salt dihydrate edathamil disodium dihydrate disodium edathamil dihydrate EDTA disodium dihydrate tetracemate disodium dihydrate disodium ethylenediaminetetraacetate dihydrate Cheladrate dihydrate Chelaplex III endrate disodium dihydrate Sequestrene NA 2 dihydrate sodium Versenate dihydrate Titriplex III Versene disodium salt dihydrate ethylenediaminetetraacetic acid disodium salt dihydrate EDTA... 

Standard EDTA Solutions. Disodium dihydrogen ethylenediaminetetraacetate dihydrate is available commercially of analytical reagent purity. After drying at 80°C for at least 24 hr, its composition agrees exactly with the dihydrate formula (molecular weight 372.25). It may be weighed directly. If an additional check on the concentration is required, it may be standardized by titration with nearly neutralized zinc chloride or zinc sulfate solution. 

Weigh 0.5 g propyl gallate (0.5% final) and 0.5 g ethylenediaminetetraacetic acid, disodium salt dihydrate (EDTA 0.5% final) into a 100-ml volumetric flask, dissolve crystals in a small volume of 1 1 (v/v) ethanol/water and dilute to mark with ethanol/water solution. Prepare fresh daily. 

Acetoxy-2-methylpropanoyl bromide (S)-(-)-2-Acetoxypropionyl bromide Poly-4-vinylpyridine Palladium on charcoal Ethylenediaminetetraacetic acid disodium salt dihydrate (Fluka)... 

Ethylenediaminetetraacetic acid, disodium salt dihydrate, 99+% was obtained from Aldrich Chemical Company, Inc. and used as received. The EDTA mixture was heated gently to facilitate dissolution and was allowed to cool to room temperature prior to use. 

Ethylenediaminetetraacetic add, disodium salt dihydrate Acetic acid (ethylenedinitrilo)tetra-, disodium salt, dihydrate (8) Glycine, N,N -1,2-ethanediylbis[N-(carboxymethyl)-, disodium salt, dihydrate (9) (6381-92-6)... 

EDTA solution CioHi4N2Na208 2H2O, 0.025 mol/L for samples with S<20. Dissolve 18.61 g of ethylenediaminetetraacetate (disodium salt, dihydrated, analytical-reagent grade, a.g.) dried at 50 °C for 1 h) in distilled water and dilute to 2000 mL. Determine the exact titre by standardization with the magnesium standard solution. 

From this material, samples are cut and swelled to constant weight in a buffered saline solution prepared from 8.43 g sodium chloride (NaCl), 9.26 g boric acid (H3BO3), 1.0 g sodium borate (Na3B03), and 0.1 g of the disodium salt of the dihydrate of ethylenediaminetetraacetic acid [Na2 EDTA -(/ 0)21 ini L of distilled water. 

Ethylenediaminetetraacetic acid, ammonium ferric salt. See Ferric ammonium EDTA Ethylenediaminetetraacetic acid, calcium disodium salt. See. Calcium disodium EDTA Ethylenediaminetetraacetic acid, dipotassium salt dihydrate. See Dipotassium EDTA dihydrate... 

A 100-mL Erlenmeyer flask is charged with 40 mL of ethanol, 4-stearoyl-2,2,6,6-tetra-methylpiperidine (prepared from the sodium salt of 4-hydroxy-2,2,6,6-tetramethyl-piperidine, 1 g, 2.4 mmol), sodium timgstate dihydrate (0.05 g, 0.15 mmol), Chelaton 3 (disodium salt of ethylenediaminetetraacetic acid, 0.05 g, 0.14 mmol), and hydrogen peroxide (30%, 3 mL). The flask is inunersed in the cleaning bath and sonicated 2 x 10 h at 50°C (the mixture is left standing overnight between the two sonication periods). 

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