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: 2,2-bis(3,4-dimethylphenyl)-1,1,1,3,3,3-hexafluoropropane
- Aliases: 6F-BX, Bis(3,4-dimethylphenyl)hexafluoropropane
- CAS Number: 65294-20-4
- EINECS: N/A
- Molecular Formula: C17H16F6
- Molecular Weight: 334.30
- Chemical Classification: Fluorinated aromatic monomer, polyimide raw material, high-performance polymer intermediate
- Core Advantages
Hexafluoroisopropylidene bridged dimethyl disubstituted aromatic monomer. The electron-withdrawing CF6 group endows polymer with low dielectric constant, low water absorption, high light transmittance and outstanding thermal oxidation resistance. Methyl substituents on benzene ring improve molecular chain flexibility and film forming property. Mainly used for synthesizing colorless transparent polyimide, high-frequency electronic insulating film, aerospace heat-resistant composite resin and optoelectronic substrate materials.
2. Physical & Chemical Properties
2.1 Physical Index
- Appearance: White crystalline solid
- Odor: Odorless
- Solubility: Soluble in NMP, DMAc, DMF, DMSO, hot toluene and xylene; slightly soluble in ethanol; insoluble in water and aliphatic alkane solvents
- Melting Point: 122–126 °C
- Hygroscopy: Non-hygroscopic under dry sealed storage
- Optical Property: Low UV absorption after polymerization, excellent visible light transmittance
2.2 Chemical Properties
- Hexafluoroisopropylidene bridge (-C(CF3)2-): Strong electron-withdrawing group, reduces molecular polarity and dielectric loss of polymer, raises decomposition temperature
- Disubstituted methyl benzene rings: Methyl groups can be oxidized to carboxyl groups for further polycondensation with dianhydride monomers
- Thermal Stability: No obvious decomposition below 300 °C, high carbon residue rate at high temperature
- Acid & Alkali Stability: Stable under neutral and weak acid/weak alkali environment; resistant to hydrolysis
- Photostability: Better anti-ultraviolet aging performance than non-fluorinated bisphenyl monomers
- Compatibility: Fully compatible with polar amide solvents and aromatic dianhydride monomers; incompatible with strong oxidants and concentrated strong acid
3. Main Application Fields
3.1 Transparent Polyimide Monomer (Core Usage)
Key fluorinated aromatic raw material for colorless transparent polyimide (CPI) films, applied to foldable display flexible substrates, optical window coating and camera lens base film.
3.2 High-Frequency Electronic Insulation Material
Precursor for low-dielectric polyimide insulating layer of high-speed flexible circuit boards, effectively reducing high-frequency signal transmission loss.
3.3 Aerospace Heat-Resistant Composite Resin
Synthesis building block of lightweight high-temperature resistant polyimide composite for aircraft and satellite structural components.
3.4 Organic Functional Material Intermediate
Raw material for high-stability organic semiconductor and hole transport materials in optoelectronic devices.
4. Quality Specification Table
| Test Item | Standard Index |
| CAS No. | 65294-20-4 |
| Molecular Formula | C17H16F6 |
| Molecular Weight | 334.30 |
| Appearance | White crystalline solid |
| Melting Range | 122–126 °C |
| HPLC Purity | Electronic Grade ≥99.5%; Synthetic Grade ≥98.0% |
| Single Maximum Unknown Impurity | ≤0.10% |
| Total Related Substances | ≤0.50% |
| Moisture Content (KF) | ≤0.10% |
| Heavy Metals (Pb) | ≤5 ppm |
| Residue on Ignition | ≤0.05% |
| Bulk Package | 25kg light-proof aluminum foil lined nitrogen-sealed fiber drum |
| Sample Package | 10g / 100g / 1kg sealed light-proof aluminum foil bag |
| Storage Requirements | Hermetic, light-proof cool dry warehouse ≤25℃; isolate humid air, strong light and oxidizing substances |
| Transportation Rule | Fluorinated aromatic polymer monomer; light-proof sealed moisture-proof packaging required during transit |
| Shelf Life | 36 months under intact nitrogen-sealed light-proof packaging |
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