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In-Depth Chemical Property Analysis, Structural Insights, and Industrial Quality Metrics
Dibenzoylmethane (DBM), indexed under CAS 120-46-7, is a symmetrical 1,3-diketone organic compound represented by the chemical formula C₁₅H₁₂O₂. It exhibits dynamic keto-enol tautomerism, which forms the underlying mechanism for its exceptional chelation capability with transition metal ions and strong UV-A radiation absorption capacity.
The enol form of Dibenzoylmethane possesses an intramolecular hydrogen bond that stabilizes its planar conjugated system. When formulated into PVC matrices alongside Calcium/Zinc soap systems, CAS 120-46-7 rapidly exchanges unstable allylic chloride atoms, drastically suppressing initial color development and preventing catastrophic polymer degradation during thermal processing.
As a leading China CAS 120-46-7 manufacturer, JIMPOCHEM produces ultra-pure DBM with a certified chemical purity of ≥ 99.5%. Through refined multi-stage crystallization technology, our product minimizes volatile residual impurities, ensuring zero odor emissions and optimal thermal resistance up to 250°C.
| Parameter / Parameter Name | Guaranteed Standard Specification | Typical Batch Test Result | Test Method / Instrument |
|---|---|---|---|
| Chemical Name | 1,3-Diphenyl-1,3-propanedione (Dibenzoylmethane) | 1,3-Diphenyl-1,3-propanedione | IUPAC Nomenclature Verification |
| CAS Registry Number | 120-46-7 | 120-46-7 | CAS Chemical Index |
| Appearance | White to light-yellow crystalline powder | Conforms (Pure Light Yellow Powder) | Visual Inspection |
| Purity (GC / HPLC) | ≥ 99.5% | 99.78% | High Performance Liquid Chromatography |
| Melting Point Range | 76.0 °C – 79.0 °C | 77.2 °C – 78.5 °C | Capillary Melting Point Apparatus |
| Loss on Drying | ≤ 0.5% | 0.18% | Vacuum Drying Oven (105°C / 2 hrs) |
| Residue on Ignition (Ash) | ≤ 0.1% | 0.03% | High-Temperature Muffle Furnace |
| Solubility | Soluble in acetone, chloroform, methanol; Insoluble in water | Conforms completely | Solvent Miscibility Assay |
Macro Economic Drivers Shaping the Demand for High-Purity Dibenzoylmethane (CAS 120-46-7)
Global environmental mandates (such as EU REACH Annex XVII, RoHS, and China GB standards) have accelerated the phase-out of lead-, cadmium-, and organotin-based heat stabilizers in rigid and flexible PVC manufacturing. Calcium/Zinc (Ca/Zn) composite organic stabilizer formulations have emerged as the dominant non-toxic alternative. In these eco-friendly systems, CAS 120-46-7 serves as an indispensable primary co-stabilizer, neutralizing early discoloration and significantly boosting dynamic thermal stability during high-speed extrusion.
In personal care and cosmetic formulation science, Dibenzoylmethane derivatives (specifically Avobenzone / BMDBM) represent the global standard for broad-spectrum UVA photon absorption. Pure CAS 120-46-7 is used both as a high-purity synthetic precursor and direct additive in sun care formulations. Its unique ability to absorb electromagnetic radiation in the 320–400 nm waveband makes it critical for anti-aging skincare products and weatherable optical polymers.
With the global push toward clean energy, photovoltaic (PV) module encapsulation sheets (such as EVA and POE films) require extreme UV stabilization to maintain optical transparency over a 25-year operational lifespan. CAS 120-46-7 acts as a synergistic light stabilizer intermediate, shielding polymer chains against free radical degradation induced by intense sunlight and high operating temperatures.
Turnkey Application Engineering Across Diverse Industrial Ecosystems
Application: PVC Window Profiles, Medical Tubing, Food Packaging Films, Automotive Interiors.
Technical Mechanism: When heated, PVC undergoes dehydrochlorination, producing conjugated polyene sequences that cause severe discoloration and embrittlement. CAS 120-46-7 chelates zinc chloride (ZnCl₂)—a catalyst for degradation—thereby mitigating "zinc burning" and extending thermal stability time by up to 300% in Ca/Zn stabilizer systems.
Application: Broad-Spectrum Sunscreen Lotions, Daily Anti-Aging Moisturizers, Lip Balms.
Technical Mechanism: CAS 120-46-7 acts as a foundational building block for organic solar filters. It effectively dissipates absorbed energy through harmless non-radiative decay pathways, protecting lipid membranes and cutaneous proteins from free-radical photolytic decomposition.
Application: Automotive Clear Coats, Architectural Powder Coatings, Outdoor Protective Films.
Technical Mechanism: Incorporated into acrylic, polyester, or polyurethane resin matrices, DBM traps photochemically generated radicals and absorbs harmful solar ultraviolet rays, dramatically delaying gloss loss, surface micro-cracking, and yellowing over extended outdoors exposure.
State-of-the-Art Chemical Plant Engineering in Jinan Chemical Industry Park
JIMPOCHEM utilizes a proprietary catalytic condensation route starting from high-grade acetophenone and methyl benzoate. Operating under fully enclosed, automated DCS digital control systems, our synthesis achieves high atom economy, recycles solvent loops at over 98.5% efficiency, and minimizes wastewater generation in strict compliance with national zero-emission targets.
Every single drum of Dibenzoylmethane (CAS 120-46-7) produced at our Jinan plant is linked to a unique QR tracking code. Downstream clients can instantaneously access raw material sourcing histories, reaction parameters, operating logs, and high-precision HPLC/GC laboratory analytical reports, ensuring 100% batch-to-batch repeatability.
Seamless Supply Chain Management for International Procurement Directors
We provide full technical dossier packages including EU REACH registration documentation, US TSCA inventory compliance declarations, SDS (29 CFR 1910.1200 / GHS Rev. 9), Certificates of Origin (Form E, CO), and COA with every order to ensure rapid customs clearance globally.
Standard packaging includes 25kg multi-wall paper bags with double PE anti-moisture inner liners, 25kg fiber drums, or customized 500kg jumbo super sacks. All containers feature palletization with shrink-wrap shrink wrap and nitrogen purging upon request.
Situated within Shandong's chemical hub, JIMPOCHEM leverages proximity to Qingdao Port and Tianjin Port for fast vessel dispatch. We offer Flexible incoterms (FOB, CIF, CFR, DDP, DAP) and provide buffer stock holding solutions for long-term contracted clients.
Pioneering Next-Generation Polymer Stabilization & Eco-Friendly Chemical Innovations
To address workplace safety concerns regarding dust explosion risks and speed up dissolution rates in polymer melt blenders, JIMPOCHEM is launching ultra-fine micro-granulated Dibenzoylmethane grades that maintain superior dispersion without dusting.
In line with global decarbonization strategies, our R&D team is developing bio-derived aromatic platform compounds to synthesize CAS 120-46-7 with a reduced carbon footprint, supporting downstream enterprise scope-3 emission reduction goals.
Direct Expert Answers to Technical, Regulatory, and Purchasing Inquiries regarding CAS 120-46-7
CAS 120-46-7 corresponds to Dibenzoylmethane (DBM), a high-purity organic 1,3-diketone. Its primary application is serving as an essential co-stabilizer in non-toxic Calcium/Zinc (Ca/Zn) PVC thermal stabilization systems. Additionally, DBM functions as a crucial chemical intermediate for synthesizing broad-spectrum UV absorbers (like Avobenzone) used in personal care, cosmetics, clear plastics, and outdoor protective coatings.
During thermal processing of PVC, heat causes loss of HCl and forms active allylic chlorine sites that initiate rapid chain degradation ("zinc burning"). DBM acts synergistically with zinc stearate by rapidly displacing labile chlorine atoms and forming stable zinc complexes. This scavenges free chloride ions, prevents yellowing, and preserves transparency and dynamic stability in rigid and flexible PVC products.
JIMPOCHEM manufactures enterprise-grade Dibenzoylmethane with a guaranteed minimum purity of 99.5% (determined by HPLC/GC analysis). Our product features tight melting point controls (76.0°C – 79.0°C), minimal loss on drying (≤ 0.5%), and ultra-low ash content (≤ 0.1%), ensuring zero interference with masterbatch formulations.
We provide full technical dossier support including EU REACH registration compliance, US TSCA status certification, GHS-compliant Safety Data Sheets (SDS), Certificates of Analysis (COA) for every shipment batch, and ISO 9001 / ISO 14001 factory accreditation documentation.
CAS 120-46-7 is packaged in 25kg multi-wall paper bags with double moisture-barrier PE liners or 25kg fiber drums. Store in a dry, cool, well-ventilated warehouse away from direct sunlight, strong oxidizing agents, and heat sources. When stored under sealed original packaging at temperatures below 30°C, the product has a shelf life of 24 months.
Designated Chemical Service Provider – Quality Leads the Future
JIMPOCHEM CO., LTD was established in 2010 and is headquartered in the Chemical Industry Park of Jinan City, Shandong Province. The company covers an area of over 500 acres and is a professional chemical raw material manufacturer that integrates research and development, production, sales, and technical services. Its core focus is on high-end fine chemicals and cosmetic raw materials.
We have obtained multiple product related certifications, including ISO quality system certification and environmental management system certification, and are committed to providing high-quality chemical products and one-stop procurement service solutions to global customers. Our products are exported to over 200 countries and regions in Europe, America, Southeast Asia, the Middle East, and Oceania, serving more than 5,000 international companies.
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