1.08087

Potassium sodium tartrate tetrahydrate

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

• Synonym(s): Potassium sodium tartrate tetrahydrate, Sodium potassium tartrate, Tartaric acid potassium sodium salt
• Empirical Formula (Hill Notation): C₄H₄KNaO₆ · 4H₂O
• CAS Number: 6381-59-5
• Molecular Weight: 282.22
• MDL number: MFCD00150989
• UNSPSC Code: 12352107
• EC Index Number: 206-156-8
• NACRES: NA.21

Properties

• grade: ACS reagent
• Quality Level: 300
• 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 (PO₄^3-): ≤0.001%; sulfate (SO₄^2-): ≤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

Description

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

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 1