Potassium persulfate - Premium-Grade Reagents, ≥99.5% , CAS No.7727-21-1

CAS: 7727-21-1 Cat. No.: P112191 Formula: K2S2O8 Molecular Weight: 270.32 EC Number: 231-781-8
AVAILABLE TO ORDER
GRADE & PURITY Premium-Grade Reagents ? Premium-grade reagents with enhanced purity and tighter QC than standard grades. Use for demanding applications needing extra consistency. ≥99.5%
Synonyms
Potassium peroxydisulfate | Anthion | Dipotassium peroxydisulfate | Potassium peroxydisulphate | Potassium peroxodisulfate | Peroxydisulfuric acid, dipotassium salt | potassium persulphate | Dipotassium persulfate
Storage
Room temperature,Desiccated
Shipped In
FedEx DG Service
★
Size
USA
Germany (EU)*
Price
Qty
500g
P112191-500g
9 In stock
4 In stock

$32.90

$39.90
Save $7.00 (17.54%)
12×500g
P112191-12×500g
Made to order · 8–12 wks

$331.90

$389.90
Save $58.00 (14.88%)
Enter a quantity for the sizes you want to add.
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Why this grade

Premium-Grade Reagents, ≥99.5% Premium-Grade Reagents for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Room temperature,Desiccated Ships FedEx DG Service Check lot-specific COA for exact specifications.

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Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 1771 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
Potassium peroxydisulfate | Anthion | Dipotassium peroxydisulfate | Potassium peroxydisulphate | Potassium peroxodisulfate | Peroxydisulfuric acid, dipotassium salt | potassium persulphate | Dipotassium persulfate
Specifications & Purity
Premium-Grade Reagents, ≥99.5%
Storage
Room temperature,Desiccated
Shipped In
FedEx DG Service
Grade
Premium-Grade Reagents
Purity
≥99.5%
Names and Identifiers
Pubchem Sid
Canonical Smiles
[O-]S(=O)(=O)OOS(=O)(=O)[O-].[K+].[K+]
IUPAC Name
dipotassium;sulfonatooxy sulfate
InChIKey
USHAGKDGDHPEEY-UHFFFAOYSA-L
INCHI
1S/2K.H2O8S2/c;;1-9(2,3)7-8-10(4,5)6/h;;(H,1,2,3)(H,4,5,6)/q2*+1;/p-2
Isomeric SMILES
[O-]S(=O)(=O)OOS(=O)(=O)[O-].[K+].[K+]
WGK Germany
1
RTECS
SE0400000
UN Number
1492
Packing Group
III
Molecular Weight
270.32
Reaxy-Rn
11343689
Reaxys-RN_link_address
https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=11343689&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomInorganic compounds
SuperclassMixed metal/non-metal compounds
ClassAlkali metal oxoanionic compounds
SubclassAlkali metal peroxodisulfates
Intermediate Tree Nodes Not available
Direct ParentAlkali metal peroxodisulfates
Alternative Parents Inorganic salts  Inorganic oxides  
Molecular FrameworkNot available
Substituents Alkali metal peroxodisulfate - Inorganic oxide - Inorganic salt
DescriptionThis compound belongs to the class of inorganic compounds known as alkali metal peroxodisulfates. These are inorganic compounds in which the largest oxoanion is peroxodisulfate, and in which the heaviest atom not in an oxoanion is an alkali metal.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

27 results found

Lot NumberCertificate TypeDateItem
H2618501Certificate of AnalysisAug 07, 2026 P112191
F2608488Certificate of AnalysisMay 29, 2026 P112191
F2608486Certificate of AnalysisMay 29, 2026 P112191
D2608575Certificate of AnalysisMar 21, 2026 P112191
L2516457Certificate of AnalysisNov 18, 2025 P112191
K2525570Certificate of AnalysisNov 18, 2025 P112191
I2528449Certificate of AnalysisJul 26, 2025 P112191
H2515504Certificate of AnalysisJul 26, 2025 P112191
C2511674Certificate of AnalysisFeb 17, 2025 P112191
G2426295Certificate of AnalysisJun 28, 2024 P112191
I2404445Certificate of AnalysisJun 28, 2024 P112191
H2414463Certificate of AnalysisJun 28, 2024 P112191
G2426296Certificate of AnalysisJun 28, 2024 P112191
D2403461Certificate of AnalysisMar 26, 2024 P112191
L2313426Certificate of AnalysisNov 24, 2023 P112191
K2317439Certificate of AnalysisNov 09, 2023 P112191
I2318075Certificate of AnalysisSep 11, 2023 P112191
G2329711Certificate of AnalysisJun 26, 2023 P112191
H2318574Certificate of AnalysisJun 26, 2023 P112191
G2303233Certificate of AnalysisJun 26, 2023 P112191
E23301219Certificate of AnalysisMay 17, 2023 P112191
D2315899Certificate of AnalysisApr 10, 2023 P112191
B2327822Certificate of AnalysisFeb 17, 2023 P112191
A2303530Certificate of AnalysisDec 13, 2022 P112191
I2226314Certificate of AnalysisAug 29, 2022 P112191
G2230386Certificate of AnalysisJul 21, 2022 P112191
B2207572Certificate of AnalysisJan 17, 2022 P112191
Chemical and Physical Properties
Sensitivitymoisture sensitive
Melt Point(°C)100 °C (decomposition)
Molecular Weight270.330 g/mol
XLogP3
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count8
Rotatable Bond Count1
Exact Mass269.831 Da
Monoisotopic Mass269.831 Da
Topological Polar Surface Area150.000 Ų
Heavy Atom Count12
Formal Charge0
Complexity206.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count3
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Experimental Judgment and Condition Selection for Visible-Light Catalysis in Organic Synthesis
Reaction Selection in Small-Molecule Synthesis: From Transformation-Type Assessment to Experimental Route Screening
Experimental Selection Logic for Transition-Metal-Catalyzed C–H Functionalization: When It Is Worth Pursuing and How to Assess Site Selectivity and Conditions
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Citations of This Product
Solution Calculators
Reviews

Customer Reviews

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