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Benzil (MF: C₁₄H₁₀O₂; MW: 210.23), also known as dibenzoyl, is an important aromatic diketone compound. Its unique chemical reactivity stems from containing two adjacent benzoic acid groups (-CO-C₆H₅) within its molecule, enabling reactions such as reduction, affinity addition, benzene ring substitution reactions. Upon ultraviolet (UV) irradiation, m-phthalic anhydride undergoes photoisomerisation or photodecomposition, yielding free radical intermediates. It serves as a key intermediate in organic synthesis, materials science, and pharmaceutical applications.
| Item | Specification |
| Melting point | 94–95 °C (lit.) |
| Boiling point | 346 °C |
| Density | 1.2 ± 0.1 g/cm³ |
| Vapour pressure | 1 mmHg (128.4 °C) |
| Refractive index | 1.5681 (estimated) |
| Flash point | 142.6±4.9 °C |
| Solubility | Sparingly soluble in water; readily soluble in organic solvents such as ethanol, diethyl ether, chloroform, benzene, and ethyl acetate. |
| Stability | Stable, flammable; incompatible with strong oxidising agents. |
Serves as an organic synthesis intermediate for synthesising heterocyclic compounds, preparing chiral compounds, and synthesising functionalised aromatic compounds.
Functions as a photosensitiser or photoinitiator, widely applied in photosensitive materials and photopolymerisation fields, e.g.: photoresists, photopolymerisable coatings/adhesives, photosensitive resins.
As a pharmaceutical intermediate for synthesising various drugs, including antifungal agents, antineoplastic drugs, and biochemical reagents.
As an analytical reagent for qualitative identification of biphenylcarboxylic acid or quantitative detection of hydrazine compounds in samples.
Used in small quantities for synthesising fragrances (e.g., fixatives) or as an auxiliary component in cosmetic UV absorbers (enhancing sun protection efficacy).
As a copolymerising monomer for modifying polymeric materials, such as specialised plastics in aerospace applications.
Jinan Jinbang Chemical Co., Ltd., strategically located within the New Materials Industrial Park in Tianqiao District, Jinan City, Shandong Province, stands as a prominent chemical innovator since its establishment in 2015. Operating from a modern, expansive 37,500 m² manufacturing facility, we are dedicated to the research & development, production, and global distribution of high-performance chemical solutions.
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