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Oxides and peroxides

Dioxidanylium

Also known as hydridodioxygen(1+), dioxidenium, Dioxygenyl ion

CAS 71722-67-3Formula HO2+Molar mass 33.01 g/mol
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Dioxidanylium chemical structure, HO2+, CAS 71722-67-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
71722-67-3
Formula
HO2+
Molar mass
33.01 g/mol
HS code
285390
Category
Oxides and peroxides

What is Dioxidanylium?

Plain description, key identifiers and synonyms

Hydridodioxygen(1+) is an oxygen hydride. It is a conjugate acid of a dioxygen.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
oxooxidanium
CAS number
71722-67-3Other or deprecated CAS: 12185-07-8
Molecular formula
HO2+
InChIKey
MYMOFIZGZYHOMD-UHFFFAOYSA-O
InChI
InChI=1S/O2/c1-2/p+1
SMILES (canonical and isomeric)
[OH+]=O

Synonyms

  • hydridodioxygen(1+)
  • dioxidenium
  • Dioxygenyl ion
  • Oxygen, ion
  • Dioxygen ion(1+)
  • Oxygen dimer(1+)
  • Oxygen cation(1+)
  • Diatomic oxygen(1+)
  • Dioxygen cation radical
  • Molecular oxygen(1+)
  • Diatomic oxygen ion(1+)
  • Dioxygenyl ion (O21+)
  • HOO(+)
  • HO2(+)
  • [HO2](+)

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

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

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
33.01 g/molcalc.
Exact mass
32.9971 Dacalc.
LogP (octanol/water)
-0.14calc.
Topological polar surface area
38.47 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
0calc.
Heavy atoms
2calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
1calc.
Stereocentres
0calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

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

Dioxidanylium suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

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Dioxidanylium price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Roles

  • Saccharomyces cerevisiae metabolite
  • additive
  • animal metabolite
  • anti-inflammatory agent
  • anti-inflammatory drug
  • eukaryotic metabolite
  • food additive
  • food component
  • food packaging gas
  • fungal metabolite
  • human metabolite
  • mammalian metabolite
  • metabolite
  • micronutrient
  • nutrient
  • oxidising agent
  • pharmaceutical
  • physiological role
  • reagent

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2853.90Indicative HS code

Phosphides, whether or not chemically defined, excluding ferrophosphorus, other, other

World exports in 2024
$2.45B
−33.6% vs 2023, imports $816M
2019 to 2024
Top exporters
  1. China68.4%
  2. Israel8.1%
  3. United States4.9%
Top importers
  1. United States19.3%
  2. Japan17.9%
  3. China13.4%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Dioxidanylium is indicative (it is known at chapter level only). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Dioxidanylium, based on the data on this page

What is Dioxidanylium?

Hydridodioxygen(1+) is an oxygen hydride. It is a conjugate acid of a dioxygen.

What is the CAS number of Dioxidanylium?

The CAS registry number of Dioxidanylium is 71722-67-3. Other or deprecated CAS numbers: 12185-07-8.

What is the molecular formula and weight of Dioxidanylium?

The molecular formula of Dioxidanylium is HO2+ and its molar mass is 33.01 g/mol.

What is Dioxidanylium used for?

Known uses and roles of Dioxidanylium include anti-inflammatories in pharmaceuticals, vitamins, minerals and nutrients in food and beverage, leavening and processing aids in food and beverage, saccharomyces cerevisiae metabolite, additive and 17 more.

Is Dioxidanylium hazardous?

No GHS hazard classification for Dioxidanylium is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Dioxidanylium?

Dioxidanylium is usually classified under HS code 285390 (Phosphides, whether or not chemically defined, excluding ferrophosphorus, other…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Dioxidanylium?

Post a free request on CompoundList and suppliers of Dioxidanylium will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Dioxidanylium?

Suppliers quote Dioxidanylium 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 Dioxidanylium

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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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