grade

ACS reagent
puriss. p.a.

Quality Level

200

agency

USP/NF
reag. ISO
reag. Ph. Eur.

assay

≥99.5% (perchloric acid titration)

impurities

≤0.001% total nitrogen (N)

pH

7.0-8.5 (20 °C, 5%)

anion traces

chloride (Cl^-): ≤5 mg/kg
phosphate (PO₄^3-): ≤10 mg/kg
sulfate (SO₄^2-): ≤50 mg/kg

cation traces

Ca: ≤40 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
Pb: ≤2 mg/kg
Zn: ≤5 mg/kg

SMILES string

O.O.O.O.[Na+].[K+].O[C@H]([C@@H](O)C([O-])=O)C([O-])=O

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