Potassium pyrosulphate, 98%

Name: Potassium pyrosulphate, 98%
Brand: Vaqora Chemicals
SKU: VQ-000947

About Potassium pyrosulphate, 98%

Listed under CAS 7790-62-7, Potassium pyrosulphate is a synthetic reagent available from Vaqora Chemicals with a typical assay of ≥98%. With the molecular formula K2O7S2, it has a molar mass of 254.33 g/mol. Systematically, it is named dipotassium. Sulfonato sulfate. It is also known as Potassium disulfate or Potassium pyrosulfate.

In its supplied form it is white to yellowish powder to crystals. Literature values give a density of 2.28 g/mL at 25 °C. Keep the container tightly sealed and store it in a cool, dry area. It carries the GHS signal word “Danger” with 3 hazard statements. Review the Safety Data Sheet before use.

Typical applications include organic synthesis, reaction development, medicinal chemistry and analytical determinations. It is used across academic and industrial research.

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

Typical applications

Organic synthesis
Reaction development
Medicinal chemistry
Analytical determinations

Industries

Specifications & identifiers

Chemical identifiers
Product name	Potassium pyrosulphate, 98%
Catalogue No.	VQ-000947
CAS Number	7790-62-7
IUPAC name	dipotassium;sulfonato sulfate
Molecular formula	K₂O₇S₂
Molecular weight	254.33 g/mol
Exact mass	253.836
Purity / assay	≥98%
HSN code	28332990
InChIKey	KAQHZJVQFBJKCK-UHFFFAOYSA-L
SMILES	[O-]S(=O)(=O)OS(=O)(=O)[O-].[K+].[K+]
PubChem CID	62681

Physical properties
Physical form	Crystalline
Appearance	White to yellowish powder to crystals
Density	2.28 g/mL at 25 °C
H-bond donors / acceptors	0 / 7
TPSA	140 Å²
UN number	UN 3260
Synonyms	Potassium disulfate, Potassium pyrosulfate, Dipotassium disulfate, Dipotassium disulphate, Dipotassium pyrosulfate, Disulfuric acid, dipotassium salt, Potassium sulfate (K2S2O7), Potassium disulfate (K2S2O7), Pyrosulfuric acid, dipotassium salt, Potassium pyrosulfate (K2S2O7), Disulfuric acid, potassium salt (1:2), Potassium disulfate, ReagentPlus

Safety & hazard information (GHS)

Corrosive

Toxic

Signal word: Danger

Hazard statements

H314Causes severe skin burns and eye damage
H318Causes serious eye damage
H331Toxic if inhaled

Precautionary statements: P260, P261, P264, P264 + P265, P271, P280, P301 + P330 + P331, P302 + P361 + P354, P304 + P340, P305 + P354 + P338, P316, P317, P321, P363, 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 7790-62-7

AR

Potassium pyrosulphate, GR 99%+

CAS: 7790-62-7
Formula: K₂O₇S₂
MW: 254.33 g/mol

VQ-000948

Frequently asked questions

What is the CAS number of Potassium pyrosulphate, 98%?

The CAS Registry Number of Potassium pyrosulphate, 98% is 7790-62-7. It is also known as Potassium disulfate, Potassium pyrosulfate, Dipotassium disulfate.

What is the molecular formula and molecular weight of Potassium pyrosulphate, 98%?

Potassium pyrosulphate, 98% has the molecular formula K2O7S2 and a molecular weight of 254.33 g/mol.

Which grade and pack sizes of Potassium pyrosulphate, 98% can I order?

We supply Potassium pyrosulphate, 98% in (≥98%) grade, in 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 Potassium pyrosulphate, 98%?

Yes. Every lot of Potassium pyrosulphate, 98% 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 Potassium pyrosulphate, 98% be shipped internationally?

Yes. Potassium pyrosulphate, 98% 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.