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ED2P

Sigma-Aldrich

Ethylenediaminetetraacetic acid dipotassium salt dihydrate

≥98%

Synonym(s):
(Ethylenedinitrilo)tetraacetic acid dipotassium salt, Dipotassium ethylenediaminetetraacetate dihydrate, EDTA dipotassium salt, Edathamil, Potassium ethylenediaminetetraacetate dibasic
Linear Formula:
HOOCCH2(KOOCCH2)NCH2CH2N(CH2COOK)CH2COOH · 2H2O
CAS Number:
Molecular Weight:
404.45
EC Number:
NACRES:
NA.77

biological source

synthetic

Quality Level

Assay

≥98%

form

powder

reaction suitability

reagent type: chelator

pH

4.0-5.0 (25 °C, 40.4 g/L)

mp

255-280 °C (dec.) (lit.)

solubility

3 M KOH: 160 mg/mL, clear to very slightly hazy, colorless to faintly yellow

storage temp.

room temp

SMILES string

O.O.O.O.[K+].[K+].[K+].[K+].OC(=O)CN(CCN(CC([O-])=O)CC([O-])=O)CC(O)=O.OC(=O)CN(CCN(CC(O)=O)CC([O-])=O)CC([O-])=O

InChI

1S/C10H16N2O8.2K.2H2O/c13-7(14)3-11(4-8(15)16)1-2-12(5-9(17)18)6-10(19)20;;;;/h1-6H2,(H,13,14)(H,15,16)(H,17,18)(H,19,20);;;2*1H2/q;2*+1;;/p-2

InChI key

JFROQFOCFOKDKU-UHFFFAOYSA-L

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This Item
03660036591.04819
assay

≥98%

assay

≥99.0% (KT)

assay

≥99.0% (KT)

assay

-

form

powder

form

-

form

powder

form

solid

pH

4.0-5.0 (25 °C, 40.4 g/L)

pH

4-5 (25 °C, 50 mg/mL in H2O)

pH

4.0-5.0 (25 °C, 0.1 M in H2O)

pH

4-5 (20 °C, 50 g/L in H2O)

mp

255-280 °C (dec.) (lit.)

mp

255-280 °C (dec.) (lit.)

mp

255-280 °C (dec.) (lit.)

mp

272 °C

solubility

3 M KOH: 160 mg/mL, clear to very slightly hazy, colorless to faintly yellow

solubility

-

solubility

H2O: 0.1 M at 20 °C, clear, colorless

solubility

-

storage temp.

room temp

storage temp.

-

storage temp.

-

storage temp.

15-25°C

Application

Ethylenediaminetetraacetic acid dipotassium salt dehydrate has been used as a component:
  • of EDTA–glycerol solution (EDTA-G) for decalcification
  • of buffer for monoamine and pterine analysis
  • of T-cell resuspension buffer

Used to eliminate inhibition of enzyme catalyzed reactions due to traces of heavy metals

Biochem/physiol Actions

Ethylenediaminetetraacetic acid (EDTA) is an anticoagulant, majorly used in preventing clotting of blood. EDTA may trigger aggregation of platelets resulting in pseudothrombocytopenia. EDTA-tetracycline therapy decreases coronary artery calcium levels in atherosclerosis. Calcium disodium EDTA administration is effective in slowing down the progression of chronic kidney disease. It also enhances the antimicrobial functionality of lysozyme and improves shelf life of cheese.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Precautionary Statements

Hazard Classifications

Acute Tox. 4 Inhalation

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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