Ethyl Diethylaminohydroxybenzoyl Benzoate

Functions and Uses

• Sunscreen agent: It is a common ultraviolet absorber that can effectively absorb UVA and UVB bands in ultraviolet rays. It can be added to various sun protection products such as sunscreens, sun lotions, and sun sprays to help protect the skin from ultraviolet damage, reducing the risks of sunburn, tanning, and skin photoaging.
• Cosmetic additive: Besides its sunscreen function, it can also be used as an auxiliary ingredient in cosmetics. It helps improve the texture and stability of products. It is often used in cosmetics such as lipsticks, eyeshadows, and foundations to enhance the adhesion and durability of the products on the skin.

Mechanism of Action

• The conjugated system in the molecule of ethyl diethylaminohydroxybenzoyl benzoate can absorb the energy of ultraviolet rays. When ultraviolet rays irradiate the skin surface containing this substance, the electrons in its molecules absorb the photon energy of ultraviolet rays and transition from the ground state to the excited state. Then, the excited - state molecules release the absorbed energy in the form of heat through a series of non - radiative processes, thus avoiding direct damage to skin cells by ultraviolet rays and playing a role in sun protection.

Synthesis Method

• The synthesis of ethyl diethylaminohydroxybenzoyl benzoate usually starts with benzaldehyde and diethyl malonate as starting materials. A Knoevenagel condensation reaction occurs under the action of a basic catalyst to generate an intermediate product. Then, an aminolysis reaction is carried out with diethylamine to finally obtain the target product. The specific reaction conditions and processes may vary among different manufacturers, but the overall synthetic route is basically similar.