Merck
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27285

Sigma-Aldrich

Ethylenediaminetetraacetic acid disodium salt dihydrate

meets analytical specification of Ph. Eur., BP, USP, FCC, 99.0-101.0%

Synonym(s):
Disodium ethylenediaminetetraacetate dihydrate, EDTA disodium salt, EDTA-Na2, Edathamil, Edetate disodium salt dihydrate, Sequestrene Na2
Empirical Formula (Hill Notation):
C10H14N2Na2O8 · 2H2O
CAS Number:
Molecular Weight:
372.24
Beilstein:
3900609
EC Number:
PubChem Substance ID:
NACRES:
NA.77

Agency

tested according to BP
tested according to Ph. Eur.
tested according to USP

Quality Level

reg. compliance

tested according to FCC

assay

99.0-101.0%

quality

meets analytical specification of Ph. Eur., BP, USP, FCC

impurities

residual solvents, complies
≤0.001% cyanide (CN)
≤0.001% heavy metals (as Pb)
≤0.1% nitrilotriacetic acid (HPLC) (HPLC)

loss

8.7-11.4% loss on drying, 200 °C, 3 h

pH

4-5 (20 °C, 5%)

mp

248 °C (dec.) (lit.)

solubility

water: soluble 100 g/L at 20 °C

anion traces

chloride (Cl-): ≤100 mg/kg
sulfate (SO42-): ≤500 mg/kg

cation traces

As: ≤1 mg/kg
Ca:, in accordance
Fe: ≤10 mg/kg
Pb: ≤10 mg/kg

application(s)

pharmaceutical (small molecule)

SMILES string

O.O.O.O.[Na+].[Na+].[Na+].[Na+].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/C10H16N2O8.2Na.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

OVBJJZOQPCKUOR-UHFFFAOYSA-L

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Application

Ethylenediaminetetraacetic acid disodium salt dihydrate has been used along with Na2HPO4 and citric acid for preparing Na2EDTA-McIlvaine buffer. Aqueous solution of Ethylenediaminetetraacetic acid disodium salt dihydrate has also been used for photocatalytic hydrogen production
Chelator of divalent cations. Inhibits enzymes, such as metalloproteases, that require divalent cations for activity.

Packaging

500 g
1, 1, 25 kg

Biochem/physiol Actions

Ethylenediaminetetraacetic acid disodium salt dihydrate is a widely used chelator of divalent cations like Ca+2 and inhibits metal ion-dependent proteases such as calcium-dependent cysteine proteases. EDTA also acts as a chelator of the zinc ion in the active site of metalloproteases; thus it inhibits metalloproteases that requires zinc for activity. Additionally, EDTA prevents platelet aggregation and is a preferred anticoagulant for platelet counts.

Pictograms

Exclamation markHealth hazard

Signal Word

Warning

Hazard Statements

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

Certificate of Analysis

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Certificate of Origin

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