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Technical Benchmark, Chemical Synthesis Dynamics & Global Procurement Landscape
1,3-Diphenyl-1,3-propanedione, commonly designated in global industrial chemistry as Dibenzoylmethane (DBM) (CAS Number: 120-46-7), represents an indispensable aromatic beta-diketone compound. Structurally consisting of two benzoyl moieties linked via a central methylene group, DBM exhibits unique keto-enol tautomerism that underpins its exceptional efficacy as a non-toxic co-stabilizer for polyvinyl chloride (PVC) thermal degradation pathways, a organic UV-A radiation absorber, and a versatile building block in fine chemical synthesis.
Key Market Insight: As global environmental regulations (such as EU REACH, RoHS, and EPA mandates) aggressively phase out heavy-metal thermal stabilizers (lead, cadmium, and barium organometallics), China's advanced synthesis of high-purity 1,3-Diphenyl-1,3-propanedione has emerged as the cornerstone for eco-friendly Calcium/Zinc (Ca/Zn) stabilization chemistry across the global polymer processing industry.
For industrial procurement managers, formulation engineers, and R&D specialists, ensuring rigorous batch-to-batch structural integrity and physical parameters is paramount. Below are the definitive technical specifications for export-grade 1,3-Diphenyl-1,3-propanedione supplied by leading Chinese industrial plants:
| Property / Test Parameter | Standard Specification | Testing Methodology |
|---|---|---|
| Chemical Name | 1,3-Diphenyl-1,3-propanedione / Dibenzoylmethane | IUPAC Standard |
| CAS Registry Number | 120-46-7 | CAS Index |
| EINECS Number | 204-398-9 | EC Inventory |
| Molecular Formula | C15H12O2 | Mass Spectrometry |
| Molecular Weight | 224.25 g/mol | Calculated |
| Purity (GC Assay) | ≥ 99.5% (High-Grade) / ≥ 99.0% (Standard) | Gas Chromatography (FID) |
| Appearance | White to light yellow crystalline powder | Visual Inspection |
| Melting Point Range | 77.0 °C – 79.5 °C | Capillary Tube / DSC |
| Loss on Drying (Volatiles) | ≤ 0.5% max | Gravimetric (105°C, 2h) |
| Ash Content | ≤ 0.1% max | Ignition Residue (650°C) |
| Solubility Profile | Soluble in acetone, chloroform, ethyl acetate; insoluble in water | Solubility Standard Test |
Understanding the multi-industry surge in high-purity 1,3-Diphenyl-1,3-propanedione demand
The global ban on toxic heavy-metal heat stabilizers (lead, cadmium, organotin compounds in drinking water pipes) has propelled Calcium/Zinc (Ca/Zn) formulations to the forefront. DBM functions as an indispensable co-stabilizer, complexing excess zinc chloride (ZnCl2) via chelation to prevent "zinc burning" and significantly suppressing early-stage discoloration during high-temperature extrusion.
Modern automotive interiors demand ultra-low VOC emissions and exceptional resistance to thermal discoloration caused by sunlight exposure on dashboards and door trims. High-purity 1,3-Diphenyl-1,3-propanedione ensures low fogging properties and stable yellowing index (YI) ratings in flexible PVC films, medical tubing, and blood bag compounds.
In personal care and cosmetic formulation, DBM serves as a critical structural baseline for broad-spectrum UVA absorbers (such as Avobenzone / Butyl Methoxydibenzoylmethane). Its strong absorption resonance in the 320–400 nm UV wavelength spectrum makes it a foundational compound for photo-stabilization chemistry.
How state-of-the-art Chinese chemical parks deliver global supply stability and precision quality
China's chemical manufacturing landscape has undergone a profound transformation toward Industry 4.0 smart manufacturing. Advanced production facilities for 1,3-Diphenyl-1,3-propanedione integrate continuous automated condensation systems (Claisen condensation of acetophenone with methyl benzoate), real-time DCS digital monitoring, solvent recovery systems, and eco-certified zero-liquid-discharge (ZLD) wastewater management.
This automated industrial framework guarantees three decisive competitive advantages for global B2B procurement buyers:
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Established in 2010 and headquartered in the Chemical Industry Park of Jinan City, Shandong Province, JIMPOCHEM CO., LTD covers an expansive industrial footprint of over 500 acres. As a premier chemical raw material manufacturer, JIMPOCHEM integrates advanced research and development, continuous production, international trade, and application technical support.
Our core portfolio centers on high-end fine chemicals, polymer additives, organic intermediates, and premium cosmetic ingredients. Adhering to the core philosophy that "Quality Leads the Future," we hold full ISO 9001 Quality System Certification and ISO 14001 Environmental Management System Certification. We provide custom formulation, contract manufacturing, and one-stop supply chain management solutions to over 5,000 corporate clients across 200 countries.
Leveraging deep relationships with top-tier feedstock manufacturers, our modern production facility operates automated digital control systems. This balances large-scale continuous synthesis with agile custom synthesis capabilities.
Our total quality management framework inspects raw material intake, monitors inline process variables, and conducts 100% full-item laboratory testing (HPLC, GC, FT-IR, AAS) prior to release. Full batch traceability is maintained indefinitely.
Aligned with global net-zero targets, we invest heavily in closed-loop solvent reclamation, advanced VOC scrubbing, and bio-friendly chemical processing, empowering downstream clients to meet stringent eco-label standards.
Tailored chemical solutions optimized for global industrial sectors
High-purity ingredients for cosmetics, fragrance fixatives, facial cleansers, body washes, dental care formulations, and active preservatives including Ethyl Ascorbic Acid, Squalane, and Sodium Phytate.
Critical synthesis building blocks, active pharmaceutical ingredients (API) precursors, biological buffers (Tris Base), enzymatic buffers, and specialized medical anesthesia reagents.
Heat stabilizers (1,3-Diphenyl-1,3-propanedione / Dibenzoylmethane), light stabilizers, antioxidant synergists, plasticizers, and industrial rubber vulcanization modifiers.
Advanced solvents (HFE-7100, Ethyl Nonafluorobutyl Ether), architectural coating resins, specialty photoinitiators, lithium battery electrolyte additives (LiTFSI), and electronics chemical solutions.
Industrial grade, cosmetic grade, and high-purity chemical list
Expert answers on 1,3-Diphenyl-1,3-propanedione (DBM) applications, quality control, and global logistics
1,3-Diphenyl-1,3-propanedione operates by substituting labile allylic chlorine atoms on the PVC polymer chain, thereby inhibiting the autocatalytic dehydrochlorination reaction. When combined with Calcium/Zinc carboxylates, DBM selectively chelates zinc chloride (ZnCl2) formed during processing. This prevents the destructive "zinc burning" phenomenon, dramatically extending long-term thermal stability and preventing early-stage degradation color changes.
In standard rigid PVC profile extrusions, the typical dosage of 1,3-Diphenyl-1,3-propanedione ranges between 0.1% and 0.5% phr (parts per hundred resin). For flexible PVC films, medical tubing, or transparent sheet applications requiring high clarity, dosages may be adjusted up to 0.8% phr in synergistic combination with stearoyl benzoylmethane (SBM) or epoxidized soybean oil (ESBO).
DBM (CAS 120-46-7) features a higher melting point (77-79°C) and superior initial color holding capability due to its dual aromatic ring structure. SBM-50 features a longer aliphatic alkyl chain offering improved compatibility in soft PVC compounds. However, DBM provides superior cost-efficiency and higher thermal resistance per gram in rigid PVC processing.
Every commercial shipment of 1,3-Diphenyl-1,3-propanedione is accompanied by a batch-specific Certificate of Analysis (COA), Safety Data Sheet (SDS) in accordance with UN GHS standards, REACH registration compliance certificates (where applicable), and Technical Data Sheets (TDS). Third-party inspection reports (e.g., SGS, Intertek) are available upon buyer request.
DBM is packaged in 25 kg net moisture-proof kraft paper bags or corrugated fiber drums with inner PE liners. Palletized shipments feature shrink-wrap protection against ambient moisture. Stored in a cool, ventilated, dark warehouse below 30°C away from strong oxidizers, DBM maintains a shelf life of 24 months from the manufacturing date.
Yes. Utilizing our continuous automated crystallization technology, JIMPOCHEM can tailor the particle size distribution (micronized or standard free-flowing crystalline powder) to match client-specific automated compounding feeder systems, eliminating dust risks and optimizing compounding homogenization.
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