Potassium pyrosulfate

Product Name: Potassium pyrosulfate
CAS No.: 7790-62-7
Chemical Name: Potassium pyrosulfate
Synonyms: POTASSIUM HYDROGEN SULFATE;POTASSIUM PYROSULPHATE;POTASSIUM DISULFATE;Potassium pyrosulfat;POTASSIUM DISULPHATE;POTASSIUM PYROSULFATE;DIPOTASSIUM DISULFATE;PotassiumPyrosulphateGr;DI-POTASSIUM DISULPHATE;PotassiuM anhydrosulfate
CBNumber: CB2370613
Molecular Formula: K2O7S2
Formula Weight: 254.32
MOL File: 7790-62-7.mol

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Potassium pyrosulfate Property

Melting point:: 325 °C
Density: 2.28 g/mL at 25 °C (lit.)
bulk density: 830kg/m3
storage temp.: no restrictions.
solubility: H₂O: 0.1 M at 20 °C, clear, colorless
form: Solid
Specific Gravity: 2.28
color: White
Odor: Odorless
PH Range: 1 - 2 at 25.5 g/l at 25 °C
PH: 0.8 (50g/l, H2O, 20℃)
Water Solubility: MAY DECOMPOSE
Sensitive: Hygroscopic
Merck: 14,7664
Stability:: Stable. Incompatible with strong acids, strong bases.
InChI: 1S/2K.H2O7S2/c;;1-8(2,3)7-9(4,5)6/h;;(H,1,2,3)(H,4,5,6)/q2*+1;/p-2
InChIKey: KAQHZJVQFBJKCK-UHFFFAOYSA-L
SMILES: [K+].[K+].[O-]S(=O)(=O)OS([O-])(=O)=O
CAS DataBase Reference: 7790-62-7(CAS DataBase Reference)
EPA Substance Registry System: Disulfuric acid, dipotassium salt (7790-62-7)

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Safety

Hazard Codes: C
Risk Statements: 34
Safety Statements: 26-36/37/39-45
RIDADR: UN 3260 8/PG 2
WGK Germany: 3
TSCA: TSCA listed
HS Code: 2833 29 80
HazardClass: 8
PackingGroup: II
Storage Class: 6.1B - Non-combustible acute toxic Cat. 1 and 2
very toxic hazardous materials
Hazard Classifications: Acute Tox. 3 Inhalation
Eye Dam. 1
Skin Corr. 1A

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H314Causes severe skin burns and eye damage

H330Fatal if inhaled

Precautionary statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 307750
Product name: Potassium disulfate
Purity: ReagentPlus , 99%
Packaging: 25g
Price: $59.37
Updated: 2025/07/31

Sigma-Aldrich

Product number: 307750
Product name: Potassium disulfate
Purity: ReagentPlus , 99%
Packaging: 500g
Price: $209
Updated: 2025/07/31

Sigma-Aldrich

Product number: 1.05107
Product name: Potassium disulfate (Potassium pyrosulfate)
Purity: for analysis EMSURE? ACS
Packaging: 1kg
Price: $530
Updated: 2025/07/31

Sigma-Aldrich

Product number: 1.05107
Product name: Potassium disulfate (Potassium pyrosulfate)
Purity: for analysis EMSURE? ACS
Packaging: 5kg
Price: $2070
Updated: 2025/07/31

Sigma-Aldrich

Product number: 60235
Product name: Potassium disulfate
Purity: puriss. p.a., ≥97.5% (T)
Packaging: 1kg
Price: $430
Updated: 2025/07/31

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Potassium pyrosulfate Chemical Properties,Usage,Production

Chemical Properties

Potassium pyrosulphate, also known as potassium disulfate, appears as colorless needles or as a white crystalline powder or fused pieces. It is soluble in water, converting to potassium bisulfate. Specifically, it dissolves in cold water but decomposes in hot water to form potassium sulfate. It melts below 300 °C and decomposes at higher temperatures. This compound exhibits strong oxidizing properties and can form sulfates through eutectic fusion with certain metal oxides that are insoluble in water and acids.

Uses

Potassium disulfite supported on silica may be used for the synthesis of ethyl pyruvate.

Uses

Potassium disulfate (K₂S₂O₇) can be used:

As a salt catalyst for the conversion of hemicellulose into reducing sugars such as xylose and galactose by mechanocatalysis .
In the preparation of diacylbenzenes via Pd-catalyzed decarboxylative acylation of aromatic ketones with oxocarboxylic acids.
As an oxidant for the preparation of monosubstituted triazoles from aryl azides and propargyl alcohol using Ag₂O as a catalyst.

Uses

Acid flux in analysis, laboratory reagent.

Preparation

Potassium pyrosulphate is obtained by heating potassium hydrogen sulphate to its melting point.

General Description

Potassium disulfite (Potassium pyrosulfate) has been synthesized from potassium hydrogen sulfate, via melting.

Flammability and Explosibility

Non flammable

References

[1] P.J. MINEELY S. A T. Molten potassium pyrosulfate: The reactions of seven metal oxalates[J]. Thermochimica Acta, 1987, 114 2: Pages 281-286. DOI:10.1016/0040-6031(87)80049-7.
[2] CHUNBIN GUO. A novel perspective process for alumina extraction from coal fly ash via potassium pyrosulfate calcination activation method[J]. Journal of Cleaner Production, 2020, 271 1: 122703. DOI:10.1016/j.jclepro.2020.122703.

Potassium pyrosulfate Preparation Products And Raw materials

Raw materials

Potassium hydroxide Sulfuric acid Potassium sulfate

Preparation Products

Pyruvic acid

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Potassium pyrosulfate Suppliers

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View Lastest Price from Potassium pyrosulfate manufacturers

Shaanxi Dideu New Materials Co. Ltd

Product: Potassium pyrosulfate 7790-62-7
Price: US $0.00/kg
Min. Order: 1kg
Purity: 98%
Supply Ability: 1000kg
Release date: 2025-09-27

Shandong Deshang Chemical Co., Ltd.

Product: Potassium pyrosulfate 7790-62-7
Price: US $10.00-7.00/kg
Min. Order: 1kg
Purity: 99.99%
Supply Ability: 10 tons
Release date: 2024-06-14

Career Henan Chemical Co

Product: Potassium pyrosulfate 7790-62-7
Price: US $1.00/KG
Min. Order: 1KG
Purity: 995
Supply Ability: 25kg
Release date: 2019-07-12

7790-62-7, Potassium pyrosulfateRelated Search:

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Potassium pyrosulfate, for analysis, 98%

POTASSIUM HYDROGEN SULFATE FUSED, REAGENT (ACS)

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Potassium pyrosulfate: (Disulfuric acid, dipotassium salt)

Disulfuric acid, potassium salt (1:2)

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Potassium Hydrogen Sulfate, Fused, Powder, Reagent

Potassium pyrosulfate, 98%, for analysis

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Potassium disulfate,Potassium pyrosulfate

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Potassium hydrogen sulfate ,98%

“Anhydrous” potassiuM acid sulfate

PotassiuM anhydrosulfate

PotassiuM Pyrosulfate, Reagent, ACS

PotassiuM pyrosulfate, for analysis, 98% 25GR

PotassiuM pyrosulfate, for analysis, 98% 500GR

POTASSIUM DISULFATE FOR ANALYSIS EMSURE

PotassiuM disulfate, analytical grade

PotassiuM disulfate ReagentPlus(R), 99%

Potassium disulfate Vetec(TM) reagent grade, 97%

Potassium pyrosulfate, EMSURE?, For Analysis

POTASSIUM DISULFATE (POTASSIUM PYROSULFATE) FOR ANALYSIS EMSURE ACS

Potassium disulfate, 98%, for analysis

Potassium pyrosulfate,CP

Potassium Pyrosulphate AR

Potassium pyrosulphate, GR 99%+

TIANFUCHEM-- 7790-62-7--High purity Potassium pyrosulfate in stock

POTASSIUM PYROSULPHATE Extra Pure

POTASSIUM DISULPHATE

Potassium pyrosulfate, 98%

DIPOTASSIUM DISULFATE 98%

7790-62-7

MixtureofKHSO4andK2S2O7

K2S2O7

K2O7S2

Analytical Chromatography Product Catalog

Analytical Reagents

General Use

Inorganic Salts

Puriss p.a.

Synthetic Reagents

Inorganics