Hydrogen Peroxide vs. Carbamide Peroxide

Hydrogen peroxide and carbamide peroxide have similar uses as both have hydrogen peroxide activity. For example, both are used as teeth whiteners. However, whether hydrogen peroxide or carbamide peroxide is used differs according to needs.

Hydrogen Peroxide

Hydrogen peroxide is the simplest form of hydrogen peroxide and is represented by hydrogen peroxide. It is a clear liquid with a boiling point of 150°C. It is completely miscible with water, but can be completely separated by distillation due to its higher boiling point than water. Hydrogen peroxide is a strong redox agent. Hydrogen peroxide is a nonlinear, non-planar molecule.

Hydrogen Peroxide teeth whiteningPeroxides are by-products or intermediates of various chemical reactions. This reaction also happens in our body. Peroxides have toxic effects inside our cells. Therefore, once they are produced, they must be neutralized. Our cells have a special mechanism. In our cells there is an organelle called the peroxisome, which contains the enzyme catalase. This enzyme detoxifies by catalyzing the breakdown of hydrogen peroxide into water and oxygen.

Hydrogen peroxide has hazardous properties, such as decomposing into oxygen and water with the release of heat, or decomposing due to contamination or contact with active surfaces. Due to the formation of oxygen, the pressure inside the container increases and an explosive mixture can also be formed. The bleaching action of hydrogen peroxide is due to the oxidation and release of oxygen. This oxygen reacts with colored substances, rendering them colorless.

H2O2→H2O+O

colorless substance → colorless substance

In addition to bleaching, hydrogen peroxide is used as an oxidizer for rocket fuel, in the production of epoxides, pharmaceuticals and food, as a preservative, and more. Hydrogen peroxide is stored in paraffin-coated glass, plastic or Teflon bottles.

Carbamide Peroxide

Carbamide peroxide is an adduct of hydrogen peroxide and urea. This is also known as carbamide peroxide, carbamide hydrogen peroxide, and performamide. The molecular formula of carbamide peroxide is CH6N2O3. This is a white solid crystal with a molar mass of 94.07 g mol−1. Hydrogen peroxide is released when the solid dissolves in water.

Carbamide peroxide is an oxidizing agent. Carbamide peroxide is formed by dissolving urea in hydrogen peroxide and then crystallizing it. As an oxidant, it is widely used. Carbamide peroxide is used as a tooth whitening agent. Thanks to hydrogen peroxide, it can also be used as a bleach and disinfectant.

Therefore, this is an important compound in the cosmetic and pharmaceutical industries. Since this releases hydrogen peroxide when dissolved, carbamide peroxide is also used as a substitute for hydrogen peroxide in the laboratory. However, at higher concentrations, carbamide peroxide can be corrosive and toxic to the skin, eyes, and respiratory tract. So we have to be careful when handling this compound.

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Written by Christine Lawrence

Researcher and consultant of Cinoll. For over 5 years, Christine has helped businesses worldwide to choose and import dental products. As a lover of teeth whitening and expert in supply chain, she is going to bring out the must-have knowledge and experience of teeth whitening products.

Cinoll – Oral Care Manufacturer

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