Sodium tungstate dihydrate

InChI key

WPZFLQRLSGVIAA-UHFFFAOYSA-N

InChI

1S/2Na.2H2O.4O.W/h;;2*1H2;;;;;/q2*+1;;;;;2*-1;

SMILES string

O.O.[Na+].[Na+].[O-][W]([O-])(=O)=O

grade

ACS reagent, puriss. p.a.

assay

≥99.0% (AT)

greener alternative product characteristics

Catalysis
Learn more about the Principles of Green Chemistry.

impurities

≤0.001% total nitrogen (N), ≤0.05% free alkali (as NaOH)

mp

698 °C (lit.)

anion traces

chloride (Cl^-): ≤50 mg/kg, sulfate (SO₄^2-): ≤100 mg/kg

cation traces

As: ≤1 mg/kg, Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤10 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤50 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Mo: ≤10 mg/kg, Ni: ≤10 mg/kg, Pb: ≤10 mg/kg, Zn: ≤5 mg/kg