03660

Ethylenediaminetetraacetic acid dipotassium salt dihydrate

puriss. p.a., ≥99.0% (KT)

• Synonym(s): K₂EDTA, (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: 25102-12-9
• Molecular Weight: 404.45
• EC Number: 217-895-0
• UNSPSC Code: 12352100
• NACRES: NA.21

Properties

• grade: puriss. p.a.
• Quality Level: 200
• Assay: ≥99.0% (KT)
• pH: 4-5 (25 °C, 50 mg/mL in H₂O)
• mp: 255-280 °C (dec.) (lit.)
• anion traces: chloride (Cl^-): ≤50 mg/kg; sulfate (SO₄^2-): ≤200 mg/kg
• cation traces: Ca: ≤10 mg/kg; Cd: ≤5 mg/kg; Co: ≤5 mg/kg; Cr: ≤5 mg/kg; Cu: ≤5 mg/kg; Fe: ≤5 mg/kg; Mg: ≤5 mg/kg; Mn: ≤5 mg/kg; Na: ≤1000 mg/kg; Ni: ≤5 mg/kg; Pb: ≤5 mg/kg; Zn: ≤5 mg/kg
• 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

Description

General description

Ethylenediaminetetraacetic acid dipotassium salt dihydrate (K₂EDTA), is a well known chelating agent with various uses in chemical synthesis, analytical chemistry, and biochemistry. In chemical synthesis, K₂EDTA is often employed to remove metal impurities from solutions or as a complexation agent to control the reactivity of metal ions. It can be used to sequester or chelate metal ions such as calcium, magnesium, iron, and copper, which helps prevent undesired side reactions.

Application

Ethylenediaminetetraacetic acid dipotassium salt dihydrate (K₂EDTA) can be used as:

• A mobile phase modifier in the separation of UV filters using HPLC.
• A chelating agent in the determination of traces of beryllium compound by colorimetric method.

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

Safety Information

• Pictograms: GHS07
• Signal Word: Warning
• Hazard Statements: H332
• Precautionary Statements: P261 - P271 - P304 + P340 + P312
• 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