O

Ozone

IUPAC: ozone

O3 Inorganic Compounds CAS 10028-15-6
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Quick Reference
Formula / NotationO3
CAS Number10028-15-6
Molecular Weight47.998
Melting Point-314 °F (EPA, 1998)
Boiling Point-169.6 °F at 760 mmHg (EPA, 1998)
Density1.614 at -319.7 °F (NTP, 1992) - Denser than water; will sink
Solubility3e-05 g/100 g at 68 °F (NTP, 1992)
AppearanceOzone appears as a colorless to bluish gas that condenses to a dark blue liquid, or blue-black crystals. Has a characteristic odor in concentrations less than 2 ppm. Used as a disinfectant for air ...
Also Known AsTriatomic oxygen; 10028-15-6; Ozon; Ozone heavy work; ozono; trioxygen; Oxygen, mol (O3); trioxygene; 66H7ZZK23N; DTXSID0021098
CategoryInorganic Compounds

What is Ozone?

Ozone is an elemental molecule with formula O3. An explosive, pale blue gas (b.p. 112C) that has a characteristic, pungent odour, it is continuously produced in the upper atmosphere by the action of solar ultraviolet radiation on atmospheric oxygen. It is an antimicrobial agent used in the production of bottled water, as well as in the treatment of meat, poultry and other foodstuffs. It has a role as a mutagen, a tracer, an antiseptic drug, a disinfectant, an electrophilic reagent, an oxidising agent and a member of greenhouse gas. It is a gas molecular entity, an elemental molecule, a member of reactive oxygen species and a triatomic oxygen.

Formula & Notation

O3

IUPAC Name: ozone

Other Names / Synonyms: Triatomic oxygen; 10028-15-6; Ozon; Ozone heavy work; ozono; trioxygen; Oxygen, mol (O3); trioxygene; 66H7ZZK23N; DTXSID0021098

Properties & Characteristics

Appearance: Ozone appears as a colorless to bluish gas that condenses to a dark blue liquid, or blue-black crystals. Has a characteristic odor in concentrations less than 2 ppm. Used as a disinfectant for air .... Molecular formula: O3. Molecular weight: 47.998 g/mol. Boiling point: -169.6 °F at 760 mmHg (EPA, 1998). Melting point: -314 °F (EPA, 1998). Density: 1.614 at -319.7 °F (NTP, 1992) - Denser than water; will sink. Solubility: 3e-05 g/100 g at 68 °F (NTP, 1992). Vapor pressure: 41257 mmHg at 10.4 °F (EPA, 1998). LogP: -1.7.

Physical Data

PropertyValue
Melting Point-314 °F (EPA, 1998)
Boiling Point-169.6 °F at 760 mmHg (EPA, 1998)
Density1.614 at -319.7 °F (NTP, 1992) - Denser than water; will sink
Molecular Weight47.998
Solubility3e-05 g/100 g at 68 °F (NTP, 1992)
AppearanceOzone appears as a colorless to bluish gas that condenses to a dark blue liquid, or blue-black crystals. Has a characteristic odor in concentrations less than 2 ppm. Used as a disinfectant for air ...

Uses & Applications

Used in industrial processes, materials science, semiconductor manufacture, ceramics, or as a catalyst.

Safety Information

May be corrosive, toxic, or an oxidising agent. Handle in well-ventilated area. Consult SDS before use.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Ozone
Formula O3
CAS Number 10028-15-6
Molecular Weight 47.998
Synonyms Triatomic oxygen; 10028-15-6; Ozon; Ozone heavy work; ozono; trioxygen; Oxygen, mol (O3); trioxygene; 66H7ZZK23N; DTXSID0021098

Frequently Asked Questions

Ozone is an elemental molecule with formula O3. An explosive, pale blue gas (b.p. 112C) that has a characteristic, pungent odour, it is continuously produced in the upper atmosphere by the action of solar ultraviolet radiation on atmospheric oxygen. It is an antimicrobial agent used in the production of bottled water, as well as in the treatment of meat, poultry and other foodstuffs. It has a role as a mutagen, a tracer, an antiseptic drug, a disinfectant, an electrophilic reagent, an oxidising agent and a member of greenhouse gas. It is a gas molecular entity, an elemental molecule, a member of reactive oxygen species and a triatomic oxygen.

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.