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379824

Sigma-Aldrich

Potassium persulfate

99.99% trace metals basis

Synonym(s):

Potassium peroxodisulfate

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5 G
$65.50
25 G
$235.00

About This Item

Linear Formula:
K2S2O8
CAS Number:
7727-21-1
Molecular Weight:
270.32
EC Number:
231-781-8
MDL number:
MFCD00011386
UNSPSC Code:
12352302
PubChem Substance ID:
24863691
NACRES:
NA.23
assay:
99.99% trace metals basis
form:
solid

$65.50

Available to ship onMay 20, 2025Details

Request a Bulk Order

vapor density

9.3 (vs air)

Quality Level

200

assay

99.99% trace metals basis

form

solid

reaction suitability

core: potassium
reagent type: oxidant

impurities

≤150.0 ppm Trace Metal Analysis

SMILES string

[K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O

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

InChI key

USHAGKDGDHPEEY-UHFFFAOYSA-L

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Application

Potassium persulfate is used to initiate the polymerization of styrene to form monodispersed, surfactant-free polystyrene spheres.[1] Potassium persulfate is used as an oxidant to generate 2,2-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical cation to measure the antioxidant activities of natural compounds.[2]

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Danger

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2 - Ox. Sol. 3 - Resp. Sens. 1 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3

target_organs

Respiratory system

Storage Class

5.1B - Oxidizing hazardous materials

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

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Certificates of Analysis (COA)

Lot/Batch Number
MKCX8832
MKCX0002
MKCV2877
MKCT7546
MKCT9161

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Preparation of Monodisperse Polymer Spheres.
Fierke MA
Material Matters , 3.1, 13-13 (2008)
ESR and X-ray Structure Investigations on the Binding and Mechanism of Inhibition of the Native State of Myeloperoxidase with Low Molecular Weight Fragments
Chavali B, et al.
Applied magnetic resonance, 46.8, 853-873 (2015)
Free radical degradation of chitosan with potassium persulfate.
Hsu SC, et al.
Polymer Degradation and Stability, 75(1), 73-83 (2002)
Potassium persulfate promoted catalytic wet oxidation of fulvic acid as a model organic compound in landfill leachate with activated carbon.
Xu XY, et al.
Chemical Engineering Journal, 200, 25-31 (2012)
Toughening polystyrene by core-shell grafting copolymer polybutadiene-graft-polystyrene with potassium persulfate as initiator.
Di Cai G, et al.
Journal of Industrial and Engineering Chemistry (Amsterdam, Netherlands), 19(3), 823-828 (2013)
View All Related Papers

Articles

Initiator/Stabilizer FAQs

An article regarding common FAQs for initiators and stabilizers.

Protocols

Preparation of Monodisperse Polymer Spheres

Polymeric spheres serve as crystal templates. Synthesis methods yield large quantities.

Questions

1–2 of 2 Questions  

  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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