Formaldehyde —› Carbon Dioxide
Oxidation of Formaldehyde to Carbon Dioxide (Gas Phase)
2H2O2 (g) + CH2O (g) —› CO2 (g) + 3H2O (g)
Hydrogen Peroxide
Formaldehyde
Carbon Dioxide
Water (Humidity)
A chemical reaction is, basically, a reorganization of atoms and their electrons. If molecules can
react to create a less energetic set of products, atoms will donate, accept, or share electrons to
rearrange to a more stable configuration.
Dry Hydrogen Peroxide (DHP) is an anhydrous gas that converts formaldehyde and other Volatile
Organic Hydrocarbons (VOCs) to Carbon Dioxide and humidity. The reaction takes place in the gas
phase without need of acidic solutions.
All four reaction steps proceed rapidly with no build-up of intermediate species.
STEP 1
H2O2 + CH2O
CHO• + H2O + HO•
—›Formaldehyde
Radical Water (Humidity) Hydroxyl Radical
CHO• + HO•
—›
Hydrogen Peroxide
Formaldehyde
STEP 2
Formaldehyde Radical
Hydroxyl Radical
CH2O2
Formic Acid
STEP 3
H2O2 + CH2O2
+ H2O + HO•
—› CHOO•
Formate Radical
Water (Humidity) Hydroxyl Radical
CHOO• + HO•
—›
2nd Hydrogen Peroxide
Formic Acid
STEP 4
Formate Radical
Hydroxyl Radical
CO2 + H2O
Carbon Dioxide
Water (Humidity)
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