1,3-diphenylpropane-1,3-dione (dibenzoylmethane, DBM) is an aromatic 1,3-diketone, acetylacetone (acac) derivative, where both methyl groups have been substituted by phenyl groups. It is white solid melting 77−78 °C. Similarly to acac, DBM exist as two tautomeric forms, however keto-enol equilibrium of DBM is strongly shifted to the enol form. It is result of formation of intra-molecular hydrogen bond, which is conjugated with phenyl rings. The resonance-assisted hydrogen bond is responsible for high photostability of such compounds, and therefore, some derivates of DBM (e.g. Avobenzone) have found application as sunscreens. Dibenzoylmethane ( DBM) is an important B-diketone structure o f thermoplastics light stabilizer, heat stabilizer, non-toxic, tasteless, widely used in polyvinyl chloride (PVC) and acrylonitrile-butadiene styrene (ABS) resin, plastic processing products as new auxiliary stabilizer. Currently used in the world light stabilizers are hindered amines, benzotriazoles, and benzophenones. The future development of the stabilizer should be efficient, multi-functional, non-toxic as new product direction, conform to the trend of environmental protection, reduce pollution, toxic stabilizer production. Should develop and increase the production and promotion of the B-diketone additives. DBM compared to the commonly used variety of outdoor UV wide absorbent low transmittance, capable of absorbing more than 290nm UV. Its ultraviolet absorbing properties superior to the commonly used benzophenones and benzotriazole-based ultraviolet absorber, and having a good thermal stability, chemical stability and light stability, non-toxic and odorless, and non-contamination of the product. DBM can also be used for synthesis of efficient herbicides 1, 2 - dimethyl-3, 5 - diphenyl pyrazole sulfuric acid methyl; can be used as uranium enrichment agent; can also be used for the synthesis of highly efficient rare earth organic complex fluorescent material, when the light irradiation the material, dibenzoylmethane absorption the radiosity to REE, REE absorb energy emitting light. With the continuous expansion of the range of applications dibenzoylmethane(DBM), its demand increasing. Carry out the the DBM synthesis method has important significance. Anne shi is the freelance writer for e-commerce website in the chemistry. Guidechem.com is just a place for you to look for some chemicals! Our guidechem provide the most convenient conditions for the international buyers and let these leads benefit all the business people. Guidechem chemical B2B network provides information on china and global chemical market quotation and relative chemical Information.Guidechem Chemical Network providing the most complete information of the chemical industry.
Related Articles -
Dibenzoylmethane, DBM, 120-46-7,
|