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Oxides and peroxides

Potassium peroxide

Also known as Dipotassium peroxide, Potassium peroxide (K2(O2)), Potassium oxide (K2(O2))

CAS 17014-71-0Formula K2O2Molar mass 110.19 g/molEC 241-089-8
GHS signal word: Warning. Pictograms: Harmful or irritant
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Potassium peroxide chemical structure, K2O2, CAS 17014-71-0
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Yellow amorphous solid
Melting point
490 °C
Density
Greater than 1 at 20 °C
Solubility
Reacts with water
HS code
281530
Category
Oxides and peroxides
UN number
UN 1491
Illustrative photo, yellow pigment powder in a glass jar on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Potassium peroxide?

Plain description, key identifiers and synonyms

Potassium peroxide appears as a yellow granular solid. Mixtures of potassium peroxide and combustible material readily ignited by friction, heat or contact with moisture. Prolonged exposure to fire or heat may cause vigorous decomposition of the material and rupture of the container. Used as a bleach.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
dipotassium, peroxide
CAS number
17014-71-0 CAS number cross-checked
EC number
241-089-8
Molecular formula
K2O2
UNII
ZHB4ZOE9PU
InChIKey
XXQBEVHPUKOQEO-UHFFFAOYSA-N
InChI
InChI=1S/2K.O2/c;;1-2/q2*+1;-2
SMILES (canonical and isomeric)
[O-][O-].[K+].[K+]

Synonyms

  • Dipotassium peroxide
  • Potassium peroxide (K2(O2))
  • Potassium oxide (K2(O2))
  • Potassium peroxide [k2(o2)]
  • dipotassium, peroxide
  • Dipotassium dioxidanediide
  • Potassium peroxide [UN1491] [Oxidizer]

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Appearance
Yellow amorphous solidexp.
Melting point
490 °Cexp.
Density
Greater than 1 at 20 °Cexp.
Solubility
Reacts with waterexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
110.19 g/molcalc.
Exact mass
109.9172 Dacalc.
LogP (octanol/water)
-8.37calc.
Topological polar surface area
46.12 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
0calc.
Heavy atoms
4calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
3calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant
032NFPA 704 rating

Hazard statements

  • H272May intensify fire, oxidiser.
  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
Precautionary statements (13)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P220Keep away from clothing and other combustible materials.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 1491
Transport hazard class
5.1
Packing group
I

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Potassium peroxide suppliers

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Potassium peroxide price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

In regenerative oxygen breathing apparatus.

Oxidizing and bleaching agent, oxygen-generating gas masks.

How it is made

Oxidation of potassium, thermal decomposition of potassium superoxide

Derivation: Oxidation of potassium in oxygen

Potassium peroxide is formed when potassium is heated in air.

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Potassium peroxide is traded under.

HS 2815.30Indicative HS code

Peroxides of sodium or potassium

World exports in 2024
$12.5M
−7.3% vs 2023, imports $12.9M
2019 to 2024
Top exporters
  1. China31.6%
  2. France * partner reported23.9%
  3. United States12.7%
Top importers
  1. United States22.5%
  2. Germany10.0%
  3. South Africa9.9%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Potassium peroxide is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Potassium peroxide, based on the data on this page

What is Potassium peroxide?

Potassium peroxide appears as a yellow granular solid. Mixtures of potassium peroxide and combustible material readily ignited by friction, heat or contact with moisture. Prolonged exposure to fire or heat may cause vigorous decomposition of the material and rupture of the container. Used as a bleach.

What is the CAS number of Potassium peroxide?

The CAS registry number of Potassium peroxide is 17014-71-0.

What is the molecular formula and weight of Potassium peroxide?

The molecular formula of Potassium peroxide is K2O2 and its molar mass is 110.19 g/mol.

What is Potassium peroxide used for?

In regenerative oxygen breathing apparatus. Oxidizing and bleaching agent, oxygen-generating gas masks.

Is Potassium peroxide hazardous?

Potassium peroxide carries the GHS signal word "Warning". Main hazards: may intensify fire, oxidiser, causes skin irritation, causes serious eye irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Potassium peroxide?

Potassium peroxide is usually classified under HS code 281530 (Peroxides of sodium or potassium). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Potassium peroxide?

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What is the price of Potassium peroxide?

Suppliers quote Potassium peroxide on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Potassium peroxide

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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