Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
1. Basic Product Profile
- Full IUPAC Name: 1,3-Diphenylpropane-1,3-dione
- Aliases: DBM, 1,3-Dibenzoyl methane
- CAS Number: 120-46-7
- EINECS: 204-398-9
- Molecular Formula: C15H12O2
- Molecular Weight: 224.25
- Chemical Classification: β-diketone UV absorber, cosmetic light stabilizer, organic synthetic ligand, rare earth extractant
- Core Advantages
Excellent UV-A absorption performance, non-toxic, good compatibility with cosmetic oils and resins. Widely used in sunscreen cosmetics, plastic anti-yellowing stabilizer, rare earth metal extraction, fluorescent powder synthesis and organic catalytic ligand fields.
2. Physical & Chemical Properties
2.1 Physical Index
- Appearance: Pale yellow crystalline powder
- Odor: Slight faint aromatic odor
- Solubility: Soluble in ethanol, isopropanol, ethyl acetate, toluene, cosmetic grease; slightly soluble in methanol; insoluble in water
- Melting Point: 77–79 °C
- UV Absorption Peak: 340–360 nm, efficient UVA blocking
- Hygroscopy: Non-hygroscopic, stable under normal dry storage
- Crystal State: Uniform fine crystal, easy to dissolve in oil phase cosmetic system
2.2 Chemical Properties
- Keto-enol tautomerism: Stable enol structure under normal temperature, strong UV absorption capacity
- Metal chelation: β-diketone structure readily forms stable complexes with rare earth, transition metal ions
- Photostability: Good light resistance, less photodegradation than common benzophenone UV absorbers
- Acid & Alkali Stability: Stable in neutral and weak acid environment; decomposed under strong alkaline heating
- Thermal Stability: Stable below 120°C; slow sublimation above 150°C
3. Main Application Fields
3.1 Cosmetic Sunscreen Raw Material (Core Usage)
Legal UVA filter for sunscreen lotion, cream, spray; effectively absorb long-wave ultraviolet to prevent skin tanning, aging and light damage; compound with octocrylene, avobenzone to improve broad-spectrum sun protection effect.
3.2 Plastic & Polymer Stabilizer
Anti-yellowing light stabilizer for PVC, polyolefin, polyurethane, transparent plastic products; inhibits UV-induced resin aging and discoloration.
3.3 Rare Earth Separation & Fluorescent Materials
Efficient extractant for rare earth metal separation; ligand for rare earth fluorescent powder, improves luminescence efficiency and color purity.
3.4 Organic Synthesis & Catalysis
β-diketone building block for pharmaceutical and dye intermediate synthesis; chelating ligand for homogeneous metal catalytic reactions.
4. Quality Specification Table
| Test Item | Standard Index |
| CAS No. | 120-46-7 |
| Molecular Formula | C15H12O2 |
| Molecular Weight | 224.25 |
| Appearance | Pale yellow crystalline powder |
| Melting Range | 77–79 °C |
| HPLC Purity | Cosmetic Grade ≥99.0% |
| Moisture Content (KF) | ≤0.10% |
| Heavy Metals (Pb) | ≤10 ppm |
| Residue on Ignition | ≤0.10% |
| Transmittance (350nm) | ≥98.0% |
| Bulk Package | 25kg aluminum foil lined fiber drum |
| Sample Package | 1kg / 5kg sealed light-proof plastic bag |
| Storage Requirements | Hermetic, light-proof cool dry warehouse ≤25℃; isolate strong oxidants and alkaline substances |
| Transportation Rule | General organic fine chemical, non-hazardous goods; light-proof waterproof packaging required |
| Shelf Life | 24 months under intact original sealed packaging |
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