What are the preparation methods of benzophenone?

At present, the main preparation methods of benzophenone include benzoyl chloride method, benzoic acid method, trichlorotoluene method, phosgene method, benzyl chloride method, carbon tetrachloride method and format reagent [7-10].

What is benzophenone used for?

Benzophenone is a common fine chemical intermediate and additive, which is widely used in pesticides, pharmaceuticals, electronic chemicals and many other fields . In the pharmaceutical industry, it is used to produce dicyclohexylpiperidine, benzotropine hydrobromide, diphenhydramine hydrochloride, etc.

What is the application scope of benzophenone?

With the further research of benzophenone, its application scope is more and more extensive, mainly including the following applications. Photoinitiator is also called light curing agent and photosensitizer. Benzophenone has simple molecular structure and is commonly used as hydrogen capturing photoinitiator .

Can benzophenone be used as a stabilizer?

This free radical is relatively stable, while water and oxygen can quench free radicals, so it can indirectly indicate the anaerobic condition. Benzophenone compounds can be used as stabilizers for polycarbonate, acrylic resin, vinyl plastics and other polymer materials .

What is the molecular weight of benzophenone?

This chemical's molecular formula is C 13 H 10 O and molecular weight is 182.22. Benzophenone is the simplest member of the class of benzophenones, being formaldehyde in which both hydrogens are replaced by phenyl groups (Figure 1). It has a role as a photosensitizing agent and a plant metabolite.

Is benzophenone a toxic substance?

This substance/mixture contains no components considered to be either persistent, bioaccumulative and toxic (PBT), or very persistent and very bioaccumulative (vPvB) at levels of 0.1% or higher. The initial threshold screening level (ITSL) for benzophenone is 100 μg/m3 with an annual averaging time. Discharge into the environment must be avoided.