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Sigma-Aldrich

Ethylenediaminetetraacetic acid tripotassium salt dihydrate

puriss. p.a., ≥99.0% (KT)

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Synonym(s):
EDTA tripotassium salt, Edathamil, Tripotassium ethylenediaminetetraacetate dihydrate
Linear Formula:
(KOOCCH2)2NCH2CH2N(CH2COOK)CH2COOH · 2H2O
CAS Number:
Molecular Weight:
442.54
Beilstein:
6762497
MDL number:
PubChem Substance ID:
NACRES:
NA.21

grade

puriss. p.a.

Quality Level

Assay

≥99.0% (KT)

form

solid

mp

182 °C (dec.) (lit.)

anion traces

chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤500 mg/kg

cation traces

Ca: ≤20 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: ≤3000 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg

SMILES string

[K+].[K+].[K+].[H]O[H].[H]O[H].OC(=O)CN(CCN(CC([O-])=O)CC([O-])=O)CC([O-])=O

InChI

1S/C10H16N2O8.3K.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;3*+1;;/p-3

InChI key

MAPFUJCWRWFQIY-UHFFFAOYSA-K

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This Item
E0270ED2P27285
assay

≥99.0% (KT)

assay

98% (titration)

assay

≥98%

assay

99.0-101.0%

form

solid

form

powder

form

powder

form

crystals

mp

182 °C (dec.) (lit.)

mp

182 °C (dec.) (lit.)

mp

255-280 °C (dec.) (lit.)

mp

248 °C (dec.) (lit.)

anion traces

chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤500 mg/kg

anion traces

-

anion traces

-

anion traces

chloride (Cl-): ≤100 mg/kg, sulfate (SO42-): ≤500 mg/kg

Quality Level

100

Quality Level

200

Quality Level

200

Quality Level

200

Application

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

Pictograms

Exclamation markHealth hazard

Signal Word

Warning

Hazard Statements

Hazard Classifications

Acute Tox. 4 Inhalation - STOT RE 2 Inhalation

Target Organs

Respiratory Tract

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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