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Oxides and peroxides

Lithium peroxide

Also known as Lithium peroxide (Li2(O2)), Dilithium peroxide, Lithium oxide (Li2O2)

CAS 12031-80-0Formula Li2O2Molar mass 45.88 g/molEC 234-758-0
GHS signal word: Danger. Pictograms: Oxidiser, Corrosive 1 supplier listed
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Lithium peroxide chemical structure, Li2O2, CAS 12031-80-0
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Fine white powder to sandy yellow, granular material, moisture sensitive colorless hexag…
Melting point
Decomposes at melting point
Density
2.31 g/cm³
Solubility
8% in water at 20 °C, 5.6% in anhydrous acetic acid at 20 °C, insoluble in absolute alco…
HS code
282520
Category
Oxides and peroxides
UN number
UN 1472
Illustrative photo, white granules in an HDPE jar on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Lithium peroxide?

Plain description, key identifiers and synonyms

Lithium peroxide appears as a white powder or sandy yellow granular solid. Irritates skin, eyes and mucous membranes. Used to produce a supply of high-purity oxygen.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
dilithium, peroxide
CAS number
12031-80-0 CAS number cross-checked
EC number
234-758-0
Molecular formula
Li2O2
UNII
9ANX556R5F
InChIKey
HPGPEWYJWRWDTP-UHFFFAOYSA-N
InChI
InChI=1S/2Li.O2/c;;1-2/q2*+1;-2
SMILES (canonical and isomeric)
[Li+].[Li+].[O-][O-]

Synonyms

  • Lithium peroxide (Li2(O2))
  • Dilithium peroxide
  • Lithium oxide (Li2O2)
  • dilithium, peroxide
  • Dilithium dioxidanediide
  • Lithium peroxide [UN1472] [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
Fine white powder to sandy yellow, granular material, moisture sensitive colorless hexagonal crystalsexp.
Melting point
Decomposes at melting pointexp.
Density
2.31 g/cm³exp.
Solubility
8% in water at 20 °C, 5.6% in anhydrous acetic acid at 20 °C, insoluble in absolute alcohol at 20 °Cexp.

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
45.88 g/molcalc.
Exact mass
46.0218 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
Danger
GHS03: Oxidiser
Oxidiser
GHS05: Corrosive
Corrosive

Hazard statements

  • H271May cause fire or explosion, strong oxidiser.
  • H272May intensify fire, oxidiser.
  • H314Causes severe skin burns and eye damage.
  • H318Causes serious eye damage.
Precautionary statements (21)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P220Keep away from clothing and other combustible materials.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • 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.
  • P283Wear fire resistant or flame retardant clothing.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P361 + P354If on skin: Take off immediately all contaminated clothing. Immediately rinse with water for several minutes.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P306 + P360If on clothing: Rinse immediately contaminated clothing and skin with plenty of water before removing clothes.
  • P316Get emergency medical help immediately.
  • P317Get medical help.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P363Wash contaminated clothing before reuse.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P371 + P380 + P375In case of major fire and large quantities: Evacuate area. Fight fire remotely due to the risk of explosion.
  • P405Store locked up.
  • P420Store separately.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 1472
Transport hazard class
5.1
Packing group
II

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

Lithium peroxide suppliers

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Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

1 supplier in 1 country

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Lithium 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

Lithium peroxide is used in space technology because it absorbs carbon dioxide and liberates oxygen.

To catalyze polymerization of styrene to polystyrene.

As supplier of active oxygen.

Hardener for the formation of special polymers and for air purification in sealed spaces (submarines, breathing apparatus, space travel).

How it is made

Addn of hydrogen peroxide to lithium hydroxide.

Reaction of lithium hydroxide solution with hydrogen peroxide, it can be isolated by careful evaporation in vacuum

Lithium peroxide is obtained by reaction of hydrogen peroxide and lithium hydroxide in ethanol or water.

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 Lithium peroxide is traded under.

HS 2825.20Indicative HS code

Lithium oxide and hydroxide

World exports in 2024
$2.77B
−65.0% vs 2023, imports $2.56B
2019 to 2024
Top exporters
  1. China80.3%
  2. Chile7.1%
  3. United States6.1%
Top importers
  1. South Korea62.8%
  2. Japan24.4%
  3. China5.0%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Lithium peroxide?

Lithium peroxide appears as a white powder or sandy yellow granular solid. Irritates skin, eyes and mucous membranes. Used to produce a supply of high-purity oxygen.

What is the CAS number of Lithium peroxide?

The CAS registry number of Lithium peroxide is 12031-80-0.

What is the molecular formula and weight of Lithium peroxide?

The molecular formula of Lithium peroxide is Li2O2 and its molar mass is 45.88 g/mol.

What is Lithium peroxide used for?

Lithium peroxide is used in space technology because it absorbs carbon dioxide and liberates oxygen. To catalyze polymerization of styrene to polystyrene. As supplier of active oxygen.

Is Lithium peroxide hazardous?

Lithium peroxide carries the GHS signal word "Danger". Main hazards: may cause fire or explosion, strong oxidiser, may intensify fire, oxidiser, causes severe skin burns and eye damage. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Lithium peroxide?

Lithium peroxide is usually classified under HS code 282520 (Lithium oxide and hydroxide). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Lithium peroxide?

CompoundList lists 1 supplier of Lithium peroxide in India. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Lithium peroxide in India?

1 supplier in India list Lithium peroxide on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Lithium peroxide?

Suppliers quote Lithium 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 Lithium 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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