03660

Ethylenediaminetetraacetic acid dipotassium salt dihydrate

puriss. p.a., ≥99.0% (KT)

• Synonyme(s) : K₂EDTA, (Ethylenedinitrilo)tetraacetic acid dipotassium salt, Dipotassium ethylenediaminetetraacetate dihydrate, EDTA dipotassium salt, Edathamil, Potassium ethylenediaminetetraacetate dibasic
• Formule linéaire : HOOCCH₂(KOOCCH₂)NCH₂CH₂N(CH₂COOK)CH₂COOH · 2H₂O
• Numéro CAS: 25102-12-9
• Poids moléculaire : 404.45
• Numéro CE : 217-895-0
• Code UNSPSC : 12352100
• Nomenclature NACRES : NA.21

Propriétés

• Qualité: puriss. p.a.
• Niveau de qualité: 200
• Pureté: ≥99.0% (KT)
• pH: 4-5 (25 °C, 50 mg/mL in H₂O)
• Pf: 255-280 °C (dec.) (lit.)
• Traces d'anions: chloride (Cl^-): ≤50 mg/kg; sulfate (SO₄^2-): ≤200 mg/kg
• Traces de cations: 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
• Chaîne SMILES: 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
• Clé InChI: JFROQFOCFOKDKU-UHFFFAOYSA-L

Description

Description générale

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

Informations sur la sécurité

• Pictogrammes: GHS07
• Mention d'avertissement: Warning
• Mentions de danger: H332
• Conseils de prudence: P261 - P271 - P304 + P340 + P312
• Classification des risques: Acute Tox. 4 Inhalation
• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 2
• Équipement de protection individuelle: dust mask type N95 (US), Eyeshields, Gloves