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Metals, alloys and elements

Atomic oxygen

Also known as Singlet oxygen, Monooxygen, Oxygen, atomic

CAS 17778-80-2Formula OMolar mass 16.00 g/mol
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Element with atomic number and standard atomic weight

Key facts

What buyers check first

All properties
CAS number
17778-80-2
Formula
O
Molar mass
16.00 g/mol
HS code
280440
Category
Metals, alloys and elements

What is Atomic oxygen?

Plain description, key identifiers and synonyms

Monooxygen is a monoatomic oxygen.

Atomic oxygen is a chemical element.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
oxidane
CAS number
17778-80-2 CAS number cross-checkedOther or deprecated CAS: 29407-84-9
Molecular formula
O
InChIKey
QVGXLLKOCUKJST-UHFFFAOYSA-N
InChI
InChI=1S/O
SMILES (canonical and isomeric)
[O]

Synonyms

  • Singlet oxygen
  • Monooxygen
  • Oxygen, atomic
  • Dioxygen, Singlet
  • Photooxygen
  • Oxygen, Singlet
  • Oxygen(sup 3P)
  • oxidanediyl
  • Oxygen element
  • Element Oxygen
  • Element:Oxygen
  • Element-O
  • Element:O
  • Oxygen (atomic)
  • Oxygen (element)
  • O (element)
  • monooxygen(2.) (triplet)

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
16.00 g/molcalc.
Exact mass
15.9949 Dacalc.
LogP (octanol/water)
-0.12calc.
Topological polar surface area
28.5 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
1calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
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.

Atomic oxygen suppliers

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

All 2 suppliers

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Where suppliers are based

2 suppliers in 1 country

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Atomic oxygen 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

Pharmacological actions

  • Oxidants

Roles

  • food component
  • macronutrient
  • nutrient
  • physiological role

Pharmacology

Singlet Oxygen is an inorganic gas in which all of the electrons are spin paired and the lowest excited state of the diatomic oxygen molecule, with potential cytotoxic activity. Singlet oxygen (sO2) is highly reactive with organic compounds and contributes to the photodegradation of many materials. This property is leveraged during photodynamic therapy (PDT) when sO2 is generated from the triplet ground state of molecular oxygen (O2) and induces oxidative damage and cell death in the targeted tissue.

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 Atomic oxygen is traded under.

HS 2804.40Indicative HS code

Oxygen

World exports in 2024
$158M
−15.7% vs 2023, imports $202M
2019 to 2024
Top exporters
  1. Belgium13.1%
  2. France * partner reported8.3%
  3. Germany7.9%
Top importers
  1. Netherlands21.1%
  2. Germany13.2%
  3. Luxembourg7.7%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about Atomic oxygen, based on the data on this page

What is Atomic oxygen?

Monooxygen is a monoatomic oxygen.

What is the CAS number of Atomic oxygen?

The CAS registry number of Atomic oxygen is 17778-80-2. Other or deprecated CAS numbers: 29407-84-9.

What is the molecular formula and weight of Atomic oxygen?

The molecular formula of Atomic oxygen is O and its molar mass is 16.00 g/mol.

What is Atomic oxygen used for?

Known uses and roles of Atomic oxygen include vitamins, minerals and nutrients in food and beverage, food component, macronutrient, nutrient, physiological role and 1 more.

Is Atomic oxygen hazardous?

No GHS hazard classification for Atomic oxygen 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 Atomic oxygen?

Atomic oxygen is usually classified under HS code 280440 (Oxygen). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Atomic oxygen?

CompoundList lists 2 suppliers of Atomic oxygen in China. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Atomic oxygen?

Suppliers quote Atomic oxygen 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 Atomic oxygen

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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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