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| Synonyms:DBM 1,3-Diphenyl-1,3-propanedione 1,3-Diphenylpropane-1,3-dione omega-Benzoylacetophenone Molecular Formula:C15H12O2 Molecular Weight: 224.25 HS Code: 2914399090 Grade: Industrial grade，99% Hazard Class:General Cargo | |||||||||
120-46-7
bosschem
120-46-7
Dibenzoylmethane, also known as 1,3-diphenyl-1,3-propanedione, is a β-diketone compound composed of two benzoyl groups linked to a methylene group. It is one of the most important environmentally friendly auxiliary heat stabilizers in the field of plastics additives. Its chemical formula is usually written as:
C15H12O2 (1,3-Diphenyl-1,3-propanedione, CAS No.: 120-46-7, EINECS No.: 204-398-9, molecular weight approx. 224.26)
It is a white to light yellow crystalline powder at room temperature, with a melting point of about 78-80℃. It is readily soluble in ethanol, ether, chloroform, benzene, and alkaline solutions, but insoluble in water. The β-diketone structure (-CO-CH2-CO-) in the DBM molecule exhibits keto and enol tautomerism. The enol structure can form stable chelates with metal ions, which is the structural basis for its thermal stability, UV absorption, and metal coordination functions.
Structurally, the two benzene rings in DBM molecule are conjugated with the β-diketone skeleton, which provides DBM molecule with excellent light absorption performance (especially in the ultraviolet region) and chelating property. It can form complex with metals such as calcium, zinc, barium and rare earth elements. It can also absorb ultraviolet ray to protect polymer materials. It is a functional chemical with 'thermal stability + light stability + chelation + luminescent coordination' in one.
DBM is chemically a β-diketone compound, chemically stable, soluble in alkaline solutions to form salts and forms coloured chelates with metal ions . It is a green alternative of the traditional lead salt stabilisers, and shows the future direction of environmentally friendly heat stabilisers, non-toxic and environment friendly. Store in a sealed, light-proof and moisture-proof container.
This product is categorised by application area, generally including: industrial grade (for PVC heat stabilisation, fine chemicals and materials application, generally with a purity of 98% or higher), cosmetic grade (for sun protection and UVA absorption), and reagent grade (for analytical testing). Different grades have different requirements for purity and hygiene control, paying special attention to the following indicators:
Factory inspection routine index melting point indicates the purity and consistency of crystal form of product, must control in the designated range (about 78-80℃).
The moisture content affects the product storage life and the processing performance, which needs strict control.
The ash content indicates the total amount of inorganic impurities, which affect the quality of the product and the compatibility of the formulation and should be controlled within a reasonable range.
Since the colour influences the transparency and appearance of downstream products, the product should be a white to light yellow crystalline powder.
Metal impurities such as iron influences thermal stability, chelation efficiency and product colour and should be kept within a reasonable range.
The product is uniformly dispersed in the formulation, so the product should be well dissolved in solvents such as ethanol and alkaline solutions, and there should be no obvious insoluble matter.
Cosmetic safety demands that heavy metal levels be maintained within legal limits for cosmetic-grade products.
DBM, with its unique properties of "β-diketone chelation + UV absorption + luminescent coordination", is used across fields such as plastics additives, daily chemicals , metallurgy, materials, and laboratories.
DBM is a β-diketone type environmental friendly auxiliary heat stabiliser. Used in combination with calcium-zinc, barium-zinc and rare earth stabilisation systems, it chelates zinc ions, avoids the "zinc burning" and improves the initial colouring and black spot phenomena. It is widely used in PVC rigid and flexible products (films, profiles, pipes and fittings, wires and cables, artificial leather) and is an environment friendly alternative to lead salt stabilisers.
2.UV absorbers and light stabilizers (industrial grade)
The conjugated structure of β-diketone in DBM makes it able to absorb ultraviolet light. It can be used as an auxiliary light stabiliser of polymer materials, absorbing ultraviolet light, delaying the photoaging of plastic products and improving the weather resistance of the products.
It can be used as a photoinitiator in UV-curable inks, wood coatings, and photosensitive printing formulations, participating in UV curing crosslinking reactions.
DBM is the parent structure of the sunscreen active ingredient avobenzone (4-tert-butyl-4'-methoxydibenzoylmethane, BMDBM). Its UVA absorption properties provide an important reference for sunscreen formulations and are an important structural basis in the field of daily chemical sunscreens.
DBM with its \beta-diketone structure is able to form stable chelates with ions like uranium, rare earth elements and transition metals and therefore it is suitable as an extractant for liquid-liquid extraction. This is useful in the separation and purification of metal ions from solutions in the fields of hydrometallurgy and nuclear chemical engineering.
DBM is a classic ligand for luminescent complexes of lanthanides (europium, terbium, etc.), which helps to construct highly efficient red fluorescent and luminescent materials for the research and development and preparation of fluorescent probes, bioimaging, display devices and anti-counterfeiting materials.
DBM is an important building block for the synthesis of β-diketones, used in the synthesis of heterocyclic compounds such as flavonoids, isoflavones, pyrazoles, and thiazoles, as well as fungicides/insecticides, functional dyes, and fragrance derivatives.
DBM forms coloured chelates with metal ions, which can be used as colorimetric reagents and analytical reagents for metal ions, to qualitatively and quantitatively detect metal ions. It is a reagent frequently used when performing analytical testing.
Complexes formed by DBM and metals can be used as catalysts or catalyst precursors for organic reactions, helping to catalyze oxidation, addition and other reactions, serving the field of fine chemical catalysis.
DBM is used as a light-stabilizing modifier for resins, coatings, and coatings to help improve the lightfastness and lifespan of products, serving the coatings and composites industries.
DBM is used in the stabilisation formulation of special products made of artificial hair fibres to meet special requirements such as transparency and resistance to yellowing.
It can be used as a fixative in fragrance formulations to delay fragrance evaporation and improve fragrance longevity.
Including special functional materials, anti-counterfeiting materials, and sensing materials, the application scope of DBM continues to expand with the development of environmentally friendly additives and functional materials.
Dibenzoylmethane (DBM, C15H12O2, CAS No. 120-46-7, EINECS No. 204-398-9) is a white to light yellow crystalline powder with a melting point of about 78-80℃. Due to its β-diketone structure, it has multiple functions including chelation, UV absorption and luminescence coordination, and is used in plastic additives, daily chemicals, metallurgy, materials and laboratory fields. In daily life, we encounter PVC through PVC water pipes, door and window profiles, wires and cables, artificial leather, plastic packaging, sun protection products, fluorescent materials, and quality testing. In applications, DBM is widely used as an auxiliary heat stabilizer for PVC, a UV absorber and light stabilizer, a UVA absorption structure for sun protection, a metal chelate extractant, a lanthanide luminescent complex ligand, an organic synthesis intermediate, a color developer and analytical reagent, a metal complex catalyst, a light-stabilizing modification of resin coatings, and a stabilizing formulation for special PVC products. It is a multi-purpose environmentally friendly chemical that connects "β-diketone chemistry" with "plastic additives, daily chemicals, metallurgy, and materials".
