Molecular Weight: 2986.01 g/mol

SodiuM Metatungstate Chemical Structure
Chemical Structure
Check the SodiuM Metatungstate product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

How to Prepare Stock Solution?

Concentration Volume Mass
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Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
Water 50 mg/mL
DMSO 30 mg/mL (10.04 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
FAQ
Q: Why does a DMSO stock precipitate in media/saline?
A: It is caused by unheated aqueous media (supersaturation), local solvent shock, or incorrect mixing sequence.
How to fix it?
  • Preheat media/saline to 37°C.
  • Mix rapidly (pipette/vortex) upon addition.
  • For complex mixes, always add the aqueous phase last.
  • Re-dissolve minor precipitates with a 37°C water bath and sonication (≤30 min).

Chemical Information

IUPAC Name hexasodium;tris(dioxido(dioxo)tungsten);nonakis(trioxotungsten)
CAS Number 12141-67-2
Molecular Formula

H2O40W12.6Na
Molecular Weight (MW) 2986.01
SMILES O.[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](
InChIKey AZCSOJKJFMWYCX-UHFFFAOYSA-N

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Note: Technical data last updated: Sep 1, 2026.