Silicotungstic acid, GR 99.5%+

Name: Silicotungstic acid, GR 99.5%+
Brand: Vaqora Chemicals
SKU: VQ-000955

About Silicotungstic acid, GR 99.5%+

Silicotungstic acid is a synthetic reagent (AR grade) carrying the CAS registry number 12027-43-9 at a purity of ≥99.5%. Formula H6O41SiW12, molecular weight 2896.2 g/mol. The IUPAC name is silicic acid. Dodecakis(trioxotungsten). Hydrate. Alternative names: Tungstosilicic acid and Tungstosilicic acid, hydrate.

It is supplied as a slight yellow to yellow powder. Store in a tightly closed container in a cool, dry and well-ventilated place. It carries the GHS signal word “Warning” with 3 hazard statements. Review the Safety Data Sheet before use.

It is commonly used for organic synthesis, reaction development, medicinal chemistry and catalysis. Our customers for this product work in academic and industrial research.

Available in 25 g, 100 g and 1 kg packs, Silicotungstic acid is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Organic synthesis
Reaction development
Medicinal chemistry
Catalysis

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Silicotungstic acid, GR 99.5%+
Catalogue No.	VQ-000955
CAS Number	12027-43-9
IUPAC name	silicic acid;dodecakis(trioxotungsten);hydrate
Molecular formula	H₆O₄₁SiW₁₂
Molecular weight	2896.2 g/mol
Exact mass	2895.2273
Grade	AR
Purity / assay	≥99.5%
HSN code	28111990
InChIKey	ACTPFSYIGLFGLY-UHFFFAOYSA-N
SMILES	O.O[Si](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](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O
PubChem CID	91667950

Physical properties
Physical form	Powder
Appearance	Slight yellow to yellow powder
H-bond donors / acceptors	5 / 41
TPSA	696 Å²

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 12027-43-9

Silicotungstic acid, 99%

CAS: 12027-43-9
Formula: H₆O₄₁SiW₁₂
MW: 2896.2 g/mol

VQ-000954

Frequently asked questions

What is the CAS number of Silicotungstic acid, GR 99.5%+?

The CAS Registry Number of Silicotungstic acid, GR 99.5%+ is 12027-43-9. It is also known as Tungstosilicic acid, Tungstosilicic acid, hydrate.

What is the molecular formula and molecular weight of Silicotungstic acid, GR 99.5%+?

Silicotungstic acid, GR 99.5%+ has the molecular formula H6O41SiW12 and a molecular weight of 2896.2 g/mol.

Which grade and pack sizes of Silicotungstic acid, GR 99.5%+ can I order?

We supply Silicotungstic acid, GR 99.5%+ in AR (≥99.5%) grade, in 25 g, 100 g, 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Silicotungstic acid, GR 99.5%+?

Yes. Every lot of Silicotungstic acid, GR 99.5%+ is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Silicotungstic acid, GR 99.5%+ be shipped internationally?

Yes. Silicotungstic acid, GR 99.5%+ is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.