Potassium pyrosulphate, GR 99%+

Name: Potassium pyrosulphate, GR 99%+
Brand: Vaqora Chemicals
SKU: VQ-000948

About Potassium pyrosulphate, GR 99%+

Potassium pyrosulphate (CAS 7790-62-7) is a synthetic reagent offered by Vaqora Chemicals (AR grade) with a typical assay of ≥99%. The compound has the formula K2O7S2, corresponding to a molecular weight of 254.33 g/mol. The IUPAC name is dipotassium. Sulfonato sulfate. Alternative names: Potassium disulfate and Potassium pyrosulfate.

The material typically appears as powder to crystals. Key physical data: a melting point of 325 °C and a density of 2.28 g/cm3 at 25 °C. Store in a tightly closed container in a cool, dry and well-ventilated place. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

Typical applications include organic synthesis, reaction development, medicinal chemistry and analytical determinations. Buyers come mainly from academic and industrial research.

We offer Potassium pyrosulphate in 100 g, 500 g, 5 kg and 4 x 25 kg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Organic synthesis
Reaction development
Medicinal chemistry
Analytical determinations

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Potassium pyrosulphate, GR 99%+
Catalogue No.	VQ-000948
CAS Number	7790-62-7
IUPAC name	dipotassium;sulfonato sulfate
Molecular formula	K₂O₇S₂
Molecular weight	254.33 g/mol
Exact mass	253.836
Grade	AR
Purity / assay	≥99%
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	Powder to crystals
Melting point	325 °C
Density	2.28 g/cm3 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

Potassium pyrosulphate, 98%

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

VQ-000947

Frequently asked questions

What is the CAS number of Potassium pyrosulphate, GR 99%+?

The CAS Registry Number of Potassium pyrosulphate, GR 99%+ 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, GR 99%+?

Potassium pyrosulphate, GR 99%+ has the molecular formula K2O7S2 and a molecular weight of 254.33 g/mol.

Which grade and pack sizes of Potassium pyrosulphate, GR 99%+ can I order?

We supply Potassium pyrosulphate, GR 99%+ in AR (≥99%) grade, in 100 g, 500 g, 5 kg, 4 x 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Potassium pyrosulphate, GR 99%+?

Yes. Every lot of Potassium pyrosulphate, GR 99%+ 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, GR 99%+ be shipped internationally?

Yes. Potassium pyrosulphate, GR 99%+ 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.