| CAS NO.303186-19-8 4-[Difluoro(3,4,5-trifluorophenoxy)methyl]-4′-ethyl-3,5-difluoro-1,1′-biphenyl | |
| Product Name | 4-[Difluoro(3,4,5-trifluorophenoxy)methyl]-4′-ethyl-3,5-difluoro-1,1′-biphenyl |
| Synonyms | 2HUQUF; 2PUQUF; 1,1′-Biphenyl, 4-[difluoro(3,4,5-trifluorophenoxy)methyl]-4′-ethyl-3,5-difluoro-; P-ethyl-2,6-difluorobiphenyl-difluoromethoxy-3,4,5-trifluorobenzene |
| CAS NO. | 303186-19-8 |
| Appearance | White solid |
| Purity | 95% min |
| MF | C21H13F7O |
| MW | 414.32 |
| Storage | Preserve in a well-closed container and keep in cool, dry place, avoid light. |
| Package | In fluoride bottle/ Fluoride drums/iron drums/plastic drums/IBC Tank ,etc. |
| Shipment method | By Sea, Air, Courier door to door, etc. |
| Loading Port | China any port, Beijing, Shanghai, Hong Kong etc. |
| Application | 1. Liquid Crystal Display (LCD) Materials
Used as a key component in negative dielectric anisotropy liquid crystal mixtures for TFT-LCD and advanced display panels. The fluorinated biphenyl structure provides strong negative dielectric anisotropy (Δε ≈ -3 to -6), high voltage holding ratio (VHR >99%), and excellent UV/thermal stability, enabling fast response times and wide viewing angles in high-resolution displays. 2. Electro-Optical Device Optimization Employed in formulating liquid crystal compositions for high-refresh-rate displays (120Hz–240Hz) and mini-LED backlit panels. Its low rotational viscosity and appropriate birefringence (Δn) help reduce power consumption while maintaining contrast ratio and color fidelity in next-generation monitor and television panels. 3. Specialty Chemical Intermediate Serves as a building block for synthesizing advanced fluorinated mesogenic compounds with tailored phase transition properties. The trifluorophenoxy methyl group offers synthetic versatility for developing new liquid crystal materials with improved clearing points and operational temperature ranges for industrial and automotive display applications. |
| Contact | Contact person: James Zhang
Email: james.zhang@dakenchem.com |
Frequently Asked Questions：
Q1: What is CAS NO.303186-19-8 commonly used for?
A: CAS 303186-19-8 is a fluorinated biphenyl compound primarily used as a component in negative dielectric anisotropy liquid crystal mixtures. It is widely applied in TFT-LCD panels, high-refresh-rate displays, and advanced electro-optical devices due to its excellent dielectric and optical properties.
Q2: What is the molecular formula and molecular weight?
A: The molecular formula is C21H13F7O, with a molecular weight of approximately 414.32 g/mol. The compound features a biphenyl core substituted with multiple fluorine atoms and a trifluorophenoxy methyl group.
Q3: What are the key electro-optical properties of this compound?
A: This fluorinated biphenyl compound exhibits strong negative dielectric anisotropy (Δε), high voltage holding ratio (VHR), and low rotational viscosity. These properties contribute to fast response times, wide viewing angles, and low power consumption in LCD applications.
Q4: How should this product be stored?
A: Store in a well-closed container in a cool, dry place away from light and heat sources. Proper storage conditions help maintain the chemical stability and performance characteristics of the material over its shelf life.
Q5: What packaging options are available?
A: Standard packaging includes fluoride bottles, fluoride drums, iron drums, plastic drums, and IBC tanks. Custom packaging can be arranged based on order quantity and customer requirements.
Application Cases：
Case 1: TFT-LCD Television Panel Manufacturing
A major Asian display manufacturer incorporated CAS 303186-19-8 into their next-generation VA-mode liquid crystal formulation for 65-inch 4K UHD television panels. The compound’s strong negative dielectric anisotropy enabled a response time reduction of approximately 15% compared to the previous formulation, while maintaining excellent contrast ratios above 5000:1. The material demonstrated stable performance across a wide operating temperature range of 0°C to 50°C, meeting the stringent requirements for consumer television applications.
Case 2: High-Refresh-Rate Gaming Monitor
A leading monitor brand developing a 240Hz gaming display required liquid crystal materials with ultra-low rotational viscosity to achieve the target frame rates without motion blur. CAS 303186-19-8 was blended into the LC mixture to provide the necessary fast switching speed while maintaining high voltage holding ratio. The resulting formulation achieved a gray-to-gray response time of 1ms (MPRT), earning the display certification for competitive gaming performance.
Case 3: Automotive Display Application
An automotive Tier-1 supplier needed liquid crystal materials capable of reliable operation in extreme temperature environments (-30°C to +85°C) for in-vehicle infotainment displays. The thermal stability and wide nematic phase range of CAS 303186-19-8 made it an ideal component for this application. The compound’s fluorinated structure provided excellent UV resistance, ensuring long-term display performance under direct sunlight exposure without image sticking or degradation.
Case 4: Mini-LED Backlit Professional Monitor
A professional color grading monitor manufacturer required liquid crystal materials with high birefringence and excellent compatibility with mini-LED backlighting systems. CAS 303186-19-8 was selected for its optimal optical anisotropy and low light scattering properties. The material contributed to achieving DCI-P3 color gamut coverage above 98% with uniform brightness distribution across the panel, meeting the demanding specifications of professional video production workflows.
Case 5: Flexible Display Research & Development
A display research institute explored the use of CAS 303186-19-8 in flexible OLED-LCD hybrid display prototypes. The compound’s molecular rigidity and favorable elastic constants (K33/K11 ratio) supported stable alignment on flexible substrates under repeated bending conditions. Test panels demonstrated consistent electro-optical performance after 100,000 bending cycles at a 5mm radius, validating the material’s potential for next-generation foldable and rollable display devices.
