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Sodium polytungstate

SIGMA/71913 - purum p.a., for the preparation of heavy liquid, ≥85% WO3 basis

Synonym: Sodium metatungstate; hexa-Sodium tungstate (W12)

CAS Number: 12141-67-2
Empirical Formula (Hill Notation): Na6O39W12 · H2O
Molecular Weight: 2986.01
EC Number: 412-770-9
MDL Number: MFCD00061466
Linear Formula: 3Na2WO4 · 9WO3 · H2O
Product Type: Chemical
Catalog Number PKG Qty. Price Quantity
45-71913-25G 25 g
 $166.00
1/EA		 Add To Favorites
45-71913-100G 100 g
 $501.00
1/EA		 Add To Favorites

 

application(s) diagnostic assay manufacturing
hematology
histology
assay ≥85% WO3 basis
color white to off-white
density 3.1 g/cm3 at 20 °C (saturated aqueous solution)
form powder or crystals
grade purum p.a.
InChI 1S/6Na.39O.12W/q6*+1;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;6*-1;;;;;;;;;;;;
InChI key AZCSOJKJFMWYCX-UHFFFAOYSA-N
pH 3 (20 °C)
quality for the preparation of heavy liquid
Quality Level 100 
SMILES string [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].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](=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O.[O-][W]([O-])(=O)=O
storage temp. room temp
technique(s) titration: suitable
Application: Sodium polytungstate (SPT) is widely used to produce heavy liquid for sink /float analysis (gravity separation) and density gradient centrifugation due to its very high solubility in water.
Other Notes: A new medium for density-gradient centrifugation, the density can be adjusted to up to 3.1 g/ml
Other Notes: A new medium for density-gradient centrifugation, the density can be adjusted to up to 3.1 g/mlcitationcitation
Purity ≥85% WO3 basis
Density 3.1 g/cm3 at 20 °C (saturated aqueous solution)
Storage Temp. room temp
UNSPSC 12352207

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