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.
Bisphenol-A bis(diphenyl phosphate)
1. Basic Information
Name: Bisphenol-A bis(diphenyl phosphate)
Abbreviation: BDP
CAS No.: 5945-33-5
Molecular Formula: C30H24O8P2
Molecular Weight: 574.45
2. Physical and Chemical Properties
Physical Properties
- Appearance: White crystalline powder or flake solid
- Odor: Faint mild organic odor
- Solubility: Soluble in CHCl3, acetone, toluene, ester solvents; slightly soluble in CH3OH; insoluble in H2O and aliphatic hydrocarbons
- Melting Point: 60–65 °C
- Hygroscopicity: Slightly hygroscopic under high humidity conditions
- Aqueous Characteristic: Hydrophobic organophosphate flame retardant, no dissolution in water
Chemical Properties
- Molecular Structure: Composed of one bisphenol A skeleton linked with two diphenyl phosphate ester groups
- Flame Retardant Mechanism: Contains high phosphorus content, forms carbon layer during combustion to isolate heat and oxygen
- Hydrolysis Stability: Stable under neutral and weak acid/alkali environments; phosphate ester bonds hydrolyze under strong acid or strong alkali heating
- Thermal Stability: Stable below 220 °C; no obvious decomposition during plastic processing temperature range
- Photostability: Slow yellowing after long-term UV irradiation
- Compatibility: Good compatibility with PC, PBT, ABS, epoxy resin; incompatible with strong oxidants and concentrated alkaline solutions
3. Main Application Fields
1. Engineering Plastic Flame Retardant (Core Application)
- Halogen-free phosphorus flame retardant for PC/ABS alloy, polycarbonate, PBT, PET
- Used in electronic plastic parts, household appliance shells, automotive plastic components
2. Epoxy Resin & Coating Additive
Flame retardant modifier for epoxy potting glue, fire-resistant coating and insulating paint
3. Adhesive & Composite Material Auxiliary
Low-smoke flame retardant for thermosetting composite and structural adhesive
4. Quality Specification Table
| Test Item | Standard Index |
| CAS Number | 5945-33-5 |
| Molecular Formula | C30H24O8P2 |
| Appearance | White crystalline powder |
| HPLC Purity | Industrial Grade ≥98.0% |
| Water Content (KF) | ≤0.10% |
| Phosphorus Content | ≥10.0% |
| Residue on Ignition | ≤0.10% |
| Heavy Metals (Pb1) | ≤10 ppm |
| Packaging | 25kg PE lined fiber drum |
| Storage Condition | Hermetically sealed in cool dry warehouse below 25 °C; isolate from alkaline substances and strong oxidants |
| Transportation Requirement | Common solid chemical, moisture-proof sealed packaging |
| Shelf Life | 36 months under intact sealed packaging |
Safety Warning
Mild irritant organophosphate compound. Dust irritates eyes, respiratory tract and skin. Wear dust mask, chemical-resistant gloves and protective goggles during feeding operation with workshop ventilation. Avoid contact with strong alkali to prevent hydrolysis. Waste solid can be incinerated by professional hazardous waste institutions; waste solvent liquid needs recovery treatment before discharge.
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