grade

ACS reagent

Quality Level

200

Assay

99%
99.0-102.0% (ACS specification)

form

powder or crystals

impurities

≤0.005% insolubles

pH

6.0-8.5

anion traces

chloride (Cl^-): ≤0.001%
phosphate (PO₄^3-): ≤0.002%
sulfate (SO₄^2-): ≤0.005%

cation traces

Ca: ≤0.005%
Fe: ≤0.001%
NH₄⁺: ≤0.002%
heavy metals: ≤5 ppm (by ICP)

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