Ozone Reactions

Ozone Reactions with Various Compounds

Ozone (O₃) is a highly reactive molecule that interacts with a wide range of organic and inorganic compounds. The nature of these reactions can differ significantly based on whether the ozone is in its gaseous or aqueous form and the specific chemicals it encounters.

Below is a general overview of the basic chemical reactions between ozone and certain compounds. While this serves as a foundational reference, it’s important to note that many other factors can influence these reactions in practical applications. Nevertheless, this information provides a useful starting point for understanding the fundamentals of ozone’s reactivity and oxidation processes.

ACIDS, ALCOHOLS, ALDEHYDES, AND KETONES:

ACETIC ACID , Formula: CH3COOH

Molecular weight = 60.052 g/mol

Reaction with Ozone: C2H402 + 4 03 —-> 2 C02 + 2 H2O + 4 O2

Oxygen moles required for reaction = 2

ACETONE, Formula: CH3COCH3

Molecular weight = 58.08 g/mol

Reaction with Ozone: C3H6O + 8 03 —-> 3 C02 + 3 H2O + 8 O2

Oxygen moles required for reaction = 4

n-BUTYL ACETATE, Formula: C6H12 O2

Molecular weight = 116.16 g/mol

Reaction with Ozone: C6H12O2 + 16 O3 —-> 6 C02 + 6 H2O + 16 O2

Oxygen moles required for reaction = 8

BUTOXYETHANOL, Fonnula: C6HI4O2

Molecular weight = 118.17 g/mol

Reaction wtih Ozone: C6HI4O2 + 17 O3 —- > 6 CO2 + 7 H2O + 4 O2

Oxygen moles required for reaction = 20.5

CETYL AlCOHOL, Formula: CH3(CH2 )15 OH

Molecular weight = 242.44 g/mol

Reaction with Ozone: CH3(CH2)15 OH + 48 03 —-> 16 CO2 + 17 H2O + 4 O2

Oxygen moles required for reaction = 24

FORMALDEHYDE, Formula: HCHO

Molecular weight = 30.031 g/mol

Reaction with Ozone: HCHO + 2 O3 —-> C02 + H2O + 2 O2

Oxygen moles required for reaction = 1

ISOPROPYL ALCOHOL, Fornula: CH3CHOHCH5

Molecular weight = 60.1 g/mol

Reaction with Ozone: CH3CHOHCH5 + 9 O3 —- > 3 CO2 + 4 H2O + 9 O2

Oxygen moles required for reaction = 4.5

GLYCEROL, Formula: C3H8O3

Molecular weight = 92.09382 g/mol

Reaction with Ozone: C3H8O3 + 3 O3 —- > 1C02 + 4H2O

Oxygen moles required for reaction = 1.5

METHACRYLIC ACID, Formula: CH2C (CH3) COOH

Molecular weight = 86.06 g/mol

Reaction with Ozone: CH2C (CH3) COOH + 9 O3 —- > 4 CO2 + 3 H2 0 + 9 O2

Number of O2 molecules consumed per molecule of compound = 4.5

METHYL-ETHYL-KETONE, Formula: CH3COC2 H5.

Molecular weight = 72.11 g/mol

Reaction with Ozone: CH3COC2H5 + 11 O3 —- > 4C02 + 4 H2O + 11 O2

Oxygen moles required for reaction = 5.5

PROPYLENE GLYCOL, Formula: C3H8 O2

Molecular weight = 79.09 g/mol

Reaction with Ozone: C3H8O2 + 8 O3 —- > 3 CO2 + 4 H2O + 8 O2

Number of O2 molecules consumed per molecule of compound = 4

AROMATIC COMPOUNDS:

1,2-DICHLOROBENZENE, Formula: C ₆H ₄CL ₂

Molecular weight = 147.01 g/mol

Reaction with Ozone C ₉H ₁₂CL ₂+ 5 O ₃—- > 6C0 ₂+ 2 H ₂O + CL ₂O

Oxygen moles required for reaction = 5

1,2,4-TRIMETHYLBENZENE, Formula: C₉H₁₂

Molecular weight = 120.19 g/mol

Reaction with Ozone C₉H₁₂ + 8 O₃ —- > 9 C0₂ + 6 H₂O

Oxygen moles required for reaction = 8

1,3,5-TRIMETHYLBENZENE (Mesitylene) Formula: C₉H₁₂

Molecular weight = 120.19 g/mol

Reaction with Ozone C₉H₁₂ + 8 O₃ —- > 9 C0₂ + 6 H₂O

Oxygen moles required for reaction = 8

1,4-Dioxane, Formula: C₄H₈O₂

Molecular weight = 88.11 g/mol

Reaction with Ozone C₄H₈O₂ + 6 O₃ —- > 8C0₂ + 4 H2O + 0₂

Oxygen moles required for reaction = 3

2-METHYLPHENOL ( ortho -Cresol), Formula: = CH₃C₆H₄(OH)

Molecular Weight = 108.14 g/mol

Reaction with Ozone 2CH₃C₆H₄OH + 14 O₃ —- > 17 C0₂ + 8 H₂O

Oxygen moles required for reaction = 7

BENZENE, Formula: C₆H₆
Molecular Weight = 78.11 g/mol

Reaction with Ozone C₆H₆ + 11 O₃ —- > 6 C0₂ + 3 H₂O + 11 O₂

Oxygen moles required for reaction = 5.5

BENZOPYRENE, Formula: C₂₀H₁₂

Molecular Weight = 252.31 g/mol

Reaction with Ozone C₂₀H₁₂ + 46 O₃ —- > 60 C0₂ + 18 H₂O

Oxygen moles required for reaction = 17

BENZYL ALCOHOL, Formula: C₆H₅CH₂OH

Molecular Weight = 108.14 g/mol

Reaction wtih Ozone. C₆H₅CH₂OH + 17 O₃ —-> 7 C0₂ + 4 H₂0 + 17 O₂

Oxygen moles required for reaction = 8.5

N.BUTYL PHTHALATE, Formula: C_I2H₁₄O₄

Molecular Weight = 278.34 g/mol

Reaction with Ozone: C_I2H₁₄O₄ + 27 O₃—-> 12 C0₂ + 7 H₂0 + 27 O₂

Oxygen moles required for reaction= 13.5

CAMPHOR, Formula: C₁₀H₁₆O

Molecular Weight = 152.23 g/mol

Reaction With Ozone: C₁₀H₁₆O + 27 O₃ —- > 10 C0₂ + 8 H₂O + 27 O₂

Oxygen moles required for reaction = 13.5

CHLOROBENZENE, Formula: C₆H₅CL

Molecular Weight = 112.56 g/mol

Reaction With Ozone: 2(C₆H₅CL) + 10 O₃ —- > 12 C0₂ + 5 H₂O + CL₂O

Oxygen moles required for reaction = 5

CIS 1,2 DICHLOROETHANE, Formula: C2H₄CL₂
Molecular Weight = 98.96 g/mol

Reaction With Ozone: C₂H₄CL₂ + 3 O₃ —- > 2 C0₂ + 2 H₂O + CL₂+ O₂

Oxygen moles required for reaction = 6

ETHYLBENZENE, Formula: C₆H₅CH₂CH₃

Molecular Weight = 106.17 g/mol

Reaction With Ozone: C₆H₅CH₂CH₃ + 7 O₃ —- > 8 C0₂ + 5 H₂O

Oxygen moles required for reaction = 7

ISOPROPYLBENZENE (Cumene), Formula: C₉H₁₂

Molecular Weight = 120.19 g/mol

Reaction with Ozone: C₉H₁₂ + 8 O₃ —-> 9 C0₂ + 6 H₂O

Oxygen moles required for reaction = 8

MTBE (Methyl tert -butyl ether), Formula: C₅H₁₂O

Molecular Weight = 88.15 g/mol

Reaction with Ozone: C₅H₁₂O + 5 O₃ —-> 5 C0₂ + 6 H₂O

Oxygen moles required for reaction = 5

n-BUTYLBENZENE, Formula: C₁₀H₁₄

Molecular Weight = 134.22 g/mol

Reaction with Ozone: C₁₀H₁₄ + 9 O3 —-> 10 C0₂ + 7 H₂O

Oxygen moles required for reaction = 9

n-PROPYLBENZENE, Formula: C₉H₁₂

Molecular Weight = 120.2 g/mol

Reaction with Ozone: C₉H₁₂ + 8 O₃ —-> 9 C0₂ + 6 H₂O

Oxygen moles required for reaction = 8

NAPHTHALENE, Formula: C₁₀H₈
Molecular Weight = 128.1705 g/mol

Reaction with Ozone: C₁₀H₈ + 8 O₃ —-> 10 C0₂ + 4 H₂O

Oxygen moles required for reaction = 8

PARA-PHENYLENEDIAMINE, Formula: = C₆H₈N₂
Molecular Weight = 108.14 g/mol

Reaction with Ozone: C₆H₈N₂ + 16 O₃ —-> 6 C0₂ + 4 H₂O + N₂ + 16 O₂

Oxygen moles required for reaction = 8

PHENOL, Formula: C₆H₆O
Molecular weight = 94.11 g/mol

Reaction with Ozone: C₆H₆O + 6 O₃ —-> 6 C0₂ + 6 H₂O

Oxygen moles required for reaction = 6

PHENANTHRENE, Formula: C₁₄H₁₀

Molecular weight = 178.24 g/mol

Reaction with Ozone: C₁₄H₁₀ + 11 O₃ —-> 14 C0₂ + 5 H₂O

Oxygen moles required for reaction = 7

RESORCINOL, Formula: C₆H₆O₂
Molecular weight = 110.1 g/mol

Reaction with Ozone: C₆H₆O₂ + 13 O₃ —-> 6 C0₂ + 3 H₂0 + 13 O₂

Number of O2 molecules consumed per molecule of compound = 6.5

STYRENE, Formula: C₆H₅CHCH₂
Molecular weight = 104.15 g/mol

Reaction with Ozone: C₆H₅CHCH₂ + 20 O₃ —- > 8 C0₂ + 4 H₂O + 20 O₂

Oxygen moles required for reaction = 10

TBA ( tert -Butyl alcohol), Formula: C₄H₁₀O
Molecular weight = 74.12 g/mol

Reaction with Ozone: C₄H₁₀O + 4 O3 —- > 4 C02 + 5 H2O

Oxygen moles required for reaction = 4

TRICRESYL, Formula: C₂₁H₂₁PO₄.
Molecular weight = 368.37 g/mol

Reaction with Ozone C₂₁H₂₁PO₄.. + 102 O₃ —- > 42 C0₂ + 21 H₂O + P₂O₅ + 102 O₂

Oxygen moles required for reaction = 51

TOLUENE, Formula: C₆H₅CH₃
Molecular weight = 92.14 g/mol

Reactlon with Ozone: C₆H₅CH₃ .+ 18 O₃ —-> 7 CO₂ + 4 H₂O + 18 O₂

Oxygen moles required for reaction = 9

XYLENE, Formula: C₆H₄(CH₃)2
Molecular weight = 106.16 g/mol

Reaction with Ozone C₆H₄(CH₃)2 + 21 O₃ —-> 8 CO₂ + 5 H₂O + 21 O₂

Oxygen moles required for reaction = 10.5

ALIPHATIC COMPOUNDS:

BUTANE, Formula: C₄H₁₀

Molecular weight = 58.12 g/mol

Reaction with Ozone: C₄H₁₀ + 13 O₃ —-> 4 CO₂ + 5 H₂O + 13 O₂

Oxygen moles required for reaction = 6.5

LIQUEFIED PETROLEUM GAS, [LPG] General Formula: CnH₂N+2. Both LPG (Liquefied petroleum gas) is a mixture of aliphatic, saturated hydrocarbons, therefore only a generic formula was used to describe the reaction with Ozone .
Reaction wtih Ozone: CnH₂N+2 + O₃—- > nC0₂+ (n+1) H₂O + O₂

Oxygen moles required for reaction: 3/2 n + 1/2 O

MINERAL SPIRITS General Formula Cn H₂n+2
Mineral spirits are mixtures of aliphatic, saturated hydrocarbons, therefore only a generic formula was used to describe the reaction with Ozone. Reaction wtih Ozone: Cn H₂n+2 + O₃—- > nCO₂+ (n+ 1) H₂O + O₂.

Oxygen moles required for reaction: 3/2 n + 1/2 O

PROPANE Formula C₃H₈

Molecular weight = 44.097 g/mo l

Reaction wtih Ozone: C₃H₈ + 10 O₃ :—-> 3 CO₂ + 4 H₂O + 10 O₂

Oxygen moles required for reaction = 5

CHLORIDES:

1,1-DICHLOROETHENE (1,1-DCE), Formula: C ₂H ₂CL ₂
Molecular weight = 96.94 g/mol

Reaction with Ozone: CH ₂CL ₂+ 1 O ₃—- > CO ₂+ H ₂O + CL ₂

Oxygen moles required for reaction = 1.33

1,2-DICHLOROETHANE (1,1-DCA), Formula: C ₂H ₄CL ₂
Molecular weight = 98.96 g/mol

Reaction with Ozone: 2 CH ₄CL ₂+ 4 O ₃—- > 2 CO ₂+ 2 H ₂O + CL ₂

Oxygen moles required for reaction = 1.67

METHYLENE CHLORIDE (Dichloromethane), Formula: CH₂CL₂
Molecular weight = 84.93 g/mol

Reaction with Ozone: 2 CH₂CL₂ + 4 O₃ —- > CO₂ + H₂O + CL₂O + 4 O

Oxygen moles required for reaction = 1

CHLORINE , Formula: CL-
Atomic mass = 35.453 u

Reaction with Ozone: CL + O₃— > CLO + O₂

Oxygen moles required for reaction = 1

CHLOROETHANE , Formula: C ₂H ₅CL
Molecular weight = 64.51 g/mol

Reaction with Ozone: 2 C ₂H ₅CL + 5 O₃— > 4 CO₂+ 10 H₂O + CL₂O

Oxygen moles required for reaction = 2

CHLOROFORM , Formula: CHCL₃
Molecular weight = 119.38 g/mol

Reaction with Ozone: 6 CHCL₃ + 6 O₃ — > 6 CO₂+ 3 H₂O + 9 CL₂O

Oxygen moles required for reaction = 2/9 O

METHYL CHLOROFORM , Formula: CH₃CCL₃
Molecular weight = 133.4 g/mol

Reaction with Ozonee: 2 CH₃CCL₃ + 14 O₃ —- > 4 CO₂ + 3 H₂O + 3 CL₂O + 14 O₂

Oxygen moles required for reaction = 3.5

PERCHLOROETHYLENE (PCE), Formula: CCL₂CCL₂
Molecular weight = 165.83 g/mol

Reaction with Ozone: CCL₂CCL₂ + 6 O₃ —- > 2 CO₂ + 2 CL₂O + 6 O₂

Oxygen moles required for reaction = 1.5

TRANS-1,2-DICHLOROETHENE, Formula: C ₂H ₂CL ₂
Molecular weight = 96.95 g/mol

Reaction with Ozone: CH ₂CL ₂+ 1 O ₃—- > CO ₂+ H ₂O + C L ₂

Oxygen moles required for reaction = 1.33

TRICHLOROETHYLENE (TCE), Formula: CHCLCCL₂
Molecular weight = 131.4 g/mol

Reaction with Ozone: 2 CHCLCCL₂ + 12 O3 —- > 4 CO2 + H2O + 3 CL2O + 12 O2

Oxygen moles required for reaction = 3

VINYL CHLORIDE, Formula: C ₂H ₃CL
Molecular weight = 62.498 g/mol

Reaction with Ozone: 2 C ₂H ₃CL + 5 O₃—- > 4 CO₂+ 6 H₂O + CL₂O

Oxygen moles required for reaction = 1.67

NITROGEN CONTAINING COMPOUNDS:

HYDROGEN CYANIDE, Formula: HCN
Molecular weight = 27.0253 g/mol

Reaction with Ozone: 2 HCN + 5 O₃ —- > 2 CO₂ + H2O + N₂ + 5 O₂

Oxygen moles required for reaction = 1.25

AMMONIA, Formula: NH₃
Molecular weight = 17.031 g/mol

Reaction with Ozone: 2 NH₃ + 3 O₃ —-> N₂ + 3 H₂0 + 3 O₂ .

Oxygen moles required for reaction = 0.75

AMMONIUM HYDROXIDE, Formula: NH₄OH
Molecular weight = 35.04 g/mol

Reaction with Ozone: 2 NH₄OH +3 O₃ —-> N₂ +5 H₂O + 3 O₂

Oxygen moles required for reaction = 0.75

BENZO(s)PYRENE, Formula: C₂0H₁₂
Molecular weight = 252.31 g/mol

Reaction with Ozone: 3 C₂0H₁₂ + 46 O₃ —- > 60 CO₂ + 18 H₂O .

Oxygen moles required for reaction = 17

EDTA (Ethylene Diamine Tetracetic Acid) , Formula: C₁₀H₁₆N₂O₈
Molecular weight = 292.24 g/mol

Reaction with Ozone: C₁₀H₁₆N₂O₈ + 20 O₃ —- > 10 CO₂ + 8 H₂O + N₂ + 2 O₂

Oxygen moles required for reaction = 30

ETHANOLAMINE, Formula: C₂H₇CH_2OH
Molecular weight = 61.08 g/mol

Reaction with Ozone: 2 NH₂CH₂CH_2OH + 13 O₃ —- > 4 CO₂ + 7 H₂O + 13 O₂ + N₂ .

Oxygen moles required for reaction: = 3.25

PHENACETIN, Formula C₁₀H₁₃NO₂
Molecular weight = 179.216 g/mol

Reaction with Ozone : CH₃CONHC₆H₄OC₂H₅. + 49 O₃ .—- > 20 CO₂ + 13 H₂O + N₂ + 49 O₂ .

Oxygen moles required for reaction = 24.5

SULFUR CONTAINING COMPOUNDS:

These compounds react with OZONE to produce sulfur trioxide (S0₃), which in the presence of water forms sulfuric acid, a strong mineral acid.

AMMONIUM PERSULFATE, Formula: (NH₄)2S₂O₈
Molecular weight = 228.18 g/mol

Persulfuric acid (H₂S₂O₈) is a very unstable acid which releases oxygen upon exposure to heat. Its decomposition product is sulfuric acid (H2S0₄) a very strong mineral acid.
Reaction with Ozone: (NH₄)2S2O₈+ 3 O₃—- >N₂+ H₂S₂O₈+ 3 H₂O + 3 O₂

Oxygen moles required for reaction = 1/5 O

SODIUM BISULFITE, Formula: NaHS0₃.
Molecular weight = 104.061 g/mol

Reaction with Ozone: NaHS0₃ + O₃ —- > NaHSO₄ + O₂

Oxygen moles required for reaction = 1.5

THIOGLYCOLIC ACID, Formula: C₂H₄O₂S
Molecular weight = 92.11 g/mol

Reaction with Ozone: HSCH₂COOH + 7 O₃ —- > 2 CO₂ + 2 H₂O + S0₃ + 7 O₂ .

Oxygen moles required for reaction = 3.5

METALS:

FERROUS IRON, Formula: Fe ²⁺

Reaction with ozone: Fe ²⁺+ O₃—- > Fe ₃⁺+ O₃^{— \}O₃^—<—–> O₂^—+ O₂\ O^—+ H₂O —- > OH +OH^—

0.43 mg of O₃per 1 mgof Fe ²⁺

MANGANESE, Formula: Mn ²⁺

Reaction with ozone: Mn ²⁺+ 2 O₃+ 4 H₂O —- > 2 MnO(OH) ₂ (s) + 2 O ₂ + 4 H+

0.88 mg of O3 per 1 mgof Mn ²⁺

OTHER:

ALKYLATED SILICATES General Formula (RnSiO)m. These silicates produce SILICA (silicon dioxide) which is considered a respiratory hazard

Reaction with Ozone: (RnSiO)m + O₃ —- > CO₂ + H₂O + SiO₂ .

Oxygen moles required for reaction = 4 5m

NON-IONIC DETERGENTS Formula CxHy , Non-ionic detergents do not have a generic formula. therefore the formula CxHy is used to define this class of compounds.
Reaction with Ozone: CxHy + O₃— > CO₂+ H₂O + O₂.

Oxygen moles required for reaction = 6x + 1.5y

HYDROGEN SULFIDE, Formula: H2S

Molecular weight = 34.1 g/mol

Reaction with Ozone: H₂S + O₃ — > H₂O + SO₂ .

3 mg of O3 per 1 mg of H ₂S (Theoretical), 4:1 O₃: H ₂S is a practical ratio for use in drinking water

HYDROGEN PEROXIDE, Formula: H₂O₂

Molecular weight = 34.0147 g/mol

Reaction with Ozone: H ₂O ₂+ O ₃—- > O ₂+ 2OH ^– The combination of Ozone and Hydrogen Peroxide is an Advanced Oxidation Process, that creates the OH-, an oxidant more powerful that ozone alone.

NON-REACTIVE COMPOUNDS

The following compounds do not react with OZONE.

CALCIUM OXIDE          -CaO
PHOSPHORIC ACID    -H₃PO₄
POTASSIUM PERSULFATE       -K₂S₂O₅
SILICAS    -SiO₂
SODIUM BROMATE       -NaBrO₃
SODIUM PERSULFATE        -Na₂S₂O₅
STRONTIUM PEROXIDE    -SrO₂
TETRASODIUM PYROPHOSPHATE    -Na₄P₂O₇
TITANIUM DIOXIDE      -TiO₂
  CARBON TETRACHLORIDE     -CLC₄

Reference:
– https://www.oxidationtech.com/ozone/ozone-reactions.html
– https://educate-yourself.org/ozone/ozonereactionswithcommonchemicals29sep06.shtml

Ozone Reactions with Various Compounds

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