1.04819

Ethylenedinitrilotetraacetic acid dipotassium salt dihydrate

suitable for titration

• Synonym(s): Ethylenedinitrilotetraacetic acid dipotassium salt dihydrate, Ethylenedinitrilotetraacetic acid dipotassium salt, Titriplex^® Potassium salt
• Empirical Formula (Hill Notation): C₁₀H₁₄K₂N₂O₈ · 2H₂O
• CAS Number: 25102-12-9
• Molecular Weight: 404.45
• MDL number: MFCD00150036
• UNSPSC Code: 12352107
• EC Index Number: 217-895-0
• NACRES: NA.21

Properties

• Product Name: Ethylenedinitrilotetraacetic acid dipotassium salt dihydrate, for analysis
• Quality Level: 100
• form: solid
• potency: >2000 mg/kg LD₅₀, oral (Rat)
• reaction suitability: reaction type: Complexometric reactions
• technique(s): titration: suitable
• pH: 4-5 (20 °C, 50 g/L in H₂O)
• mp: 272 °C
• bulk density: 310 kg/m³
• storage temp.: 15-25°C
• SMILES string: [K+].[K+].N(CCN(CC(=O)[O-])CC(=O)[O-])(CC(=O)[O-])CC(=O)[O-].O.O.[H+].[H+]
• 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

Analysis Note

Assay (complexometric; calculated on dried substance): ≥ 99.0 %


Identity (IR): conforms


Identity (Potassium): conforms


Appearance of solution (50 g/l; water): Clear and colourless


pH (50 g/l; water): 4.0 - 5.0


In water insoluble matter: ≤ 0.003 %


Chloride (Cl): ≤ 0.004 %


Sulfate (SO₄): ≤ 0.05 %


Cyanide (CN): ≤ 0.001 %


Heavy metals (as Pb): ≤ 0.0005 %


Cu (Copper): ≤ 0.0001 %


Fe (Iron): ≤ 0.001 %


Nitrilotriacetic acid: ≤ 0.05 %


Loss on drying (150 °C; 6 h): 8.5 - 9.5 %

Legal Information

Titriplex is a registered trademark of Merck KGaA, Darmstadt, Germany

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