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E0270

Sigma-Aldrich

Ethylenediaminetetraacetic acid tripotassium salt dihydrate

98% (titration)

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Synonym(s):
EDTA tripotassium salt, Edathamil, Tripotassium ethylenediaminetetraacetate dihydrate
Linear Formula:
(KOOCCH2)2NCH2CH2N(CH2COOK)CH2COOH · 2H2O
CAS Number:
65501-24-8
Molecular Weight:
442.54
Beilstein:
6762497
MDL number:
MFCD00149672
PubChem Substance ID:
24894365
NACRES:
NA.31

biological source

synthetic

Quality Level

200

Assay

98% (titration)

form

powder

reaction suitability

reagent type: chelator

pH

8-9 (20 °C, 50 g/L)

mp

182 °C (dec.) (lit.)

solubility

3 M KOH: 160 mg/mL, clear, colorless

storage temp.

room temp

SMILES string

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

InChI

1S/C10H16N2O8.3K.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;3*+1;;/p-3

InChI key

MAPFUJCWRWFQIY-UHFFFAOYSA-K

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Application

Ethylenediaminetetraacetic acid tripotassium salt dihydrate has been used to coat conical tubes to collect trunk blood for tissue and plasma samples. It has also been used in tubes to collect blood to perform mixed meal test (MMT).
Used to eliminate inhibition of enzyme catalyzed reactions due to traces of heavy metals

Biochem/physiol Actions

Ethylene diamine tetraacetic acid (EDTA) chelates divalent cations like calcium and magnesium in whole blood. It is usually available as a salt, complexed with either potassium or sodium. It is mostly used during hematological tests of the blood sample. It helps to maintain the cellular morphology to prepare blood smears for microscopic analysis. EDTA is abundantly used in RNA purification methods.

Pictograms

Exclamation markHealth hazard
GHS07,GHS08

Signal Word

Warning

Hazard Statements

H332 - H373

Hazard Classifications

Acute Tox. 4 Inhalation - STOT RE 2 Inhalation

Target Organs

Respiratory Tract

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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