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Potassium sodium tartrate tetrahydrate

for analysis EMSURE® ACS,ISO,Reag. Ph Eur

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Synonym(s):
Potassium sodium tartrate tetrahydrate, Sodium potassium tartrate, Tartaric acid potassium sodium salt
Empirical Formula (Hill Notation):
C4H4KNaO6 · 4H2O
CAS Number:
Molecular Weight:
282.22
MDL number:
EC Index Number:
206-156-8

grade

ACS reagent

Quality Level

Agency

reag. ISO
reag. Ph. Eur.
suitable for SM 4500 - NH3

product line

EMSURE®

Assay

99.0-102.0% (alkalimetric)

form

solid

impurities

≤0.005% Insoluble matter

pH

7.0-8.5 (25 °C, 50 g/L in H2O)

mp

70-80 °C

bulk density

1000 kg/m3

anion traces

chloride (Cl-): ≤0.0005%
phosphate (PO43-): ≤0.001%
sulfate (SO42-): ≤0.005%

cation traces

Ca: ≤0.004%
Cu: ≤0.0005%
Fe: ≤0.0005%
NH4+: ≤0.002%
Pb: ≤0.0005%
heavy metals (as Pb): ≤0.0005%

storage temp.

2-30°C

InChI

1S/C4H6O6.K.Na.4H2O/c5-1(3(7)8)2(6)4(9)10;;;;;;/h1-2,5-6H,(H,7,8)(H,9,10);;;4*1H2/q;2*+1;;;;/p-2/t1-,2-;;;;;;/m1....../s1

InChI key

VZOPRCCTKLAGPN-ZFJVMAEJSA-L

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1 of 4

This Item
1.932261.936261.06663
assay

99.0-102.0% (alkalimetric)

assay

-

assay

-

assay

≥99.5% (perchloric acid titration)

form

solid

form

-

form

-

form

powder

impurities

≤0.005% Insoluble matter

impurities

-

impurities

-

impurities

-

pH

7.0-8.5 (25 °C, 50 g/L in H2O)

pH

-

pH

-

pH

8 (25 °C, 50 g/L in H2O)

mp

70-80 °C

mp

-

mp

-

mp

-

Linkage

Replaces: PX1590; PX1590-1; PX1590-2; PX1590-5; PX1590-11;

Analysis Note

Assay (alkalimetric): 99.0 - 102.0 %
Insoluble matter: ≤ 0.005 %
pH-value (5 %; water; 25 °C): 7.0 - 8.5
Chloride (Cl): ≤ 0.0005 %
Phosphate (PO₄): ≤ 0.001 %
Sulfate (SO₄): ≤ 0.005 %
Heavy metals (as Pb): ≤ 0.0005 %
Ca (Calcium): ≤ 0.004 %
Cu (Copper): ≤ 0.0005 %
Fe (Iron): ≤ 0.0005 %
NH₄ (Ammonium): ≤ 0.002 %
Pb (Lead): ≤ 0.0005 %
Corresponds to ACS,ISO,Reag. Ph Eur

Legal Information

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

Storage Class Code

11 - Combustible Solids

WGK

WGK 1


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