Phosphotungstic acid, GR

Name: Phosphotungstic acid, GR
Brand: Vaqora Chemicals
SKU: VQ-014984

About Phosphotungstic acid, GR

Phosphotungstic acid is a refractory / heavy metal compound (AR grade) carrying the CAS registry number 12501-23-4. The compound has the formula H5O41PW12, corresponding to a molecular weight of 2898.1 g/mol. Its systematic (IUPAC) name is phosphoric acid. Dodecakis(trioxotungsten). Hydrate. Common synonyms include Tungstophosphoric acid and Phosphotungstic acid hydrate.

In its supplied form it is powder or crystals. Store in a tightly closed container in a cool, dry and well-ventilated place. The GHS classification uses the signal word “Danger”, so appropriate gloves, eye protection and ventilation are recommended.

Typical applications include biological staining and materials research. Typical end-use sectors are academic and industrial research.

We offer Phosphotungstic acid in 25 g, 100 g, 500 g and 5 kg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Biological staining
Materials research

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Phosphotungstic acid, GR
Catalogue No.	VQ-014984
CAS Number	12501-23-4
IUPAC name	phosphoric acid;dodecakis(trioxotungsten);hydrate
Molecular formula	H₅O₄₁PW₁₂
Molecular weight	2898.1 g/mol
Exact mass	2897.2163
Grade	AR
HSN code	28111990
InChIKey	AVFBYUADVDVJQL-UHFFFAOYSA-N
SMILES	O.OP(=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	16212977

Physical properties
Physical form	Crystalline
Appearance	Powder or crystals
H-bond donors / acceptors	4 / 41
TPSA	693 Å²
UN number	UN 3260
Synonyms	Tungstophosphoric acid, Phosphoric acid--trioxotungsten--water (1/12/1), Phosphotungstic acid hydrate, 12-Tungstophosphoric acid hydrate, Hydrogen phosphotungstate hydrate (H3PW12O40.xH2O), Phosphotungstic acid, AR, Phosphotungstic acid hydrate, reagent grade, Phosphotungstic acid hydrate, for microscopy, Phosphotungstic acid hydrate, p.a., 99.5%, Phosphotungstic acid hydrate, SAJ special grade, Hydrogenphosphotungstatehydrate(H3PW12O40.xH2O)

Safety & hazard information (GHS)

Corrosive

Harmful / irritant

Environmental hazard

Signal word: Danger

Hazard statements

H302Harmful if swallowed
H314Causes severe skin burns and eye damage
H318Causes serious eye damage
H411Toxic to aquatic life with long lasting effects

Precautionary statements: P260, P264, P264 + P265, P270, P273, P280, P301 + P317, P301 + P330 + P331, P302 + P361 + P354, P304 + P340, P305 + P354 + P338, P316, P317, P321, P330, P363, P391, 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 12501-23-4

Phosphotungstic acid

CAS: 12501-23-4
Formula: H₅O₄₁PW₁₂
MW: 2898.1 g/mol

VQ-014983

EP / AR

Phosphotungstic acid, EP, AR

CAS: 12501-23-4
Formula: H₅O₄₁PW₁₂
MW: 2898.1 g/mol

VQ-047287

Frequently asked questions

What is the CAS number of Phosphotungstic acid, GR?

The CAS Registry Number of Phosphotungstic acid, GR is 12501-23-4. It is also known as Tungstophosphoric acid, Phosphoric acid--trioxotungsten--water (1/12/1), Phosphotungstic acid hydrate.

What is the molecular formula and molecular weight of Phosphotungstic acid, GR?

Phosphotungstic acid, GR has the molecular formula H5O41PW12 and a molecular weight of 2898.1 g/mol.

Which grade and pack sizes of Phosphotungstic acid, GR can I order?

We supply Phosphotungstic acid, GR in AR grade, in 25 g, 100 g, 500 g, 5 kg, 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Phosphotungstic acid, GR?

Yes. Every lot of Phosphotungstic acid, GR 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 Phosphotungstic acid, GR be shipped internationally?

Yes. Phosphotungstic acid, GR is classified as hazardous (UN 3260), 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.