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Merck
CN

1.04819

Ethylenedinitrilotetraacetic acid dipotassium salt dihydrate

suitable for titration

Synonym(s):

Ethylenedinitrilotetraacetic acid dipotassium salt dihydrate, Ethylenedinitrilotetraacetic acid dipotassium salt, Titriplex® Potassium salt

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About This Item

Empirical Formula (Hill Notation):
C10H14K2N2O8 · 2H2O
CAS Number:
Molecular Weight:
404.45
MDL number:
UNSPSC Code:
12352107
EC Index Number:
217-895-0
NACRES:
NA.21
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Product Name

Ethylenedinitrilotetraacetic acid dipotassium salt dihydrate, for analysis

Quality Level

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

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


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pictograms

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signalword

Warning

hcodes

Hazard Classifications

Acute Tox. 4 Inhalation

Storage Class

11 - Combustible Solids

wgk

WGK 2



Certificates of Analysis (COA)

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