Sigma-Aldrich Ethylenediaminetetraacetic acid dipotassium salt dihydrate

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