2-(2-Hydroxyphenyl)-2H-benzotriazole

2-(2-Hydroxyphenyl)-2H-benzotriazole

2-(2-Hydroxyphenyl)-2H-benzotriazole is a chemical compound that belongs to the class of benzotriazoles. It is widely used in the industry as a ultraviolet light absorber (UVA) due to its ability to absorb ultraviolet (UV) light and release it as thermal energy.

Chemical Structure

The chemical structure of 2-(2-Hydroxyphenyl)-2H-benzotriazole consists of a benzotriazole moiety and a phenol group. The benzotriazole moiety is responsible for the UV absorption properties of the compound, while the phenol group contributes to its solubility in various solvents.

Synthesis

2-(2-Hydroxyphenyl)-2H-benzotriazole is synthesized through the reaction of benzotriazole with phenol in the presence of a base such as sodium hydroxide.

Applications

Due to its UV absorption properties, 2-(2-Hydroxyphenyl)-2H-benzotriazole is used in a variety of applications. It is commonly used in the production of plastics, coatings, and inks to protect them from UV degradation. It is also used in the formulation of sunscreen products due to its ability to absorb harmful UV rays.

Safety

Like other benzotriazoles, 2-(2-Hydroxyphenyl)-2H-benzotriazole is considered to be a potential environmental pollutant due to its persistence and bioaccumulation potential. However, its toxicity to humans is considered to be low.

See Also

• Benzotriazole
• Ultraviolet light absorber
• Phenol