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233706 Sigma-Aldrich

Vanadium(IV) oxide sulfate hydrate


Synonym: Vanadyl sulfate hydrate

  • CAS Number 123334-20-3

  • Linear Formula VOSO4 · xH2O

  • Molecular Weight 163.00 (anhydrous basis)

  •  MDL number MFCD00149933

  •  PubChem Substance ID 24854005

  •  NACRES NA.23



Related Categories Catalysis and Inorganic Chemistry, Chemical Synthesis, Development Quantities for Research, Materials Science, Metal and Ceramic Science,
Quality Level   100
assay   97%
form   powder
composition   Degree of hydration, 3-5
reaction suitability   reagent type: catalyst
core: vanadium
mp   105 °C (lit.)
Featured Industry   Battery Manufacturing
SMILES string   O=[V++].[H]O[H].[O-]S([O-])(=O)=O
InChI   1S/H2O4S.H2O.O.V/c1-5(2,3)4;;;/h(H2,1,2,3,4);1H2;;/q;;;+2/p-2


General description

Vanadium (IV) oxide sulfate hydrate is a blue crystalline solid. It is soluble in water and posseses weak oxidizing or reducing properties.


Vanadium (IV) oxide sulfate has been used to generate vanadium ions, which were introduced in saponite clay by hydrothermal process.


25, 100, 500 g in poly bottle

5 kg in poly drum

Safety & Documentation

Safety Information

GHS07  GHS07
Signal word 
Hazard statements 
Precautionary statements 
Personal Protective Equipment 
UN 2931 6.1 / PGII
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Frequently Asked Questions

Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
How do I get lot-specific information or a Certificate of Analysis?
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
How do I find price and availability?
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What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
How do you calculate the degree of hydration in products 233706 and 204862?
The equation used to determine the degree of hydration for products 233706 and 204862 is the following.((Molecular weight of Metal * Number of Metal Ions) - (% of metal in product as decimal * anhydrous weight of product)) / (% of metal in product as decimal * 18)Note: 18 is themolecular weight of water.
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