| CAS NO.1256601-37-2 4′-Butyl-4-[difluoro(3,4,5-trifluorophenoxy)methyl]-3,5-difluoro-1,1′-biphenyl | |
| Product Name | 4′-Butyl-4-[difluoro(3,4,5-trifluorophenoxy)methyl]-3,5-difluoro-1,1′-biphenyl |
| Synonyms | 4′-Butyl-4-[difluoro(3,4,5-trifluorophenoxy)methyl]-3,5-difluoro-1,1′-biphenyl |
| CAS NO. | 1256601-37-2 |
| Appearance | White solid |
| Purity | 95% min |
| MF | C23H17F7O |
| MW | 442.37 |
| 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. Large-Size High-Resolution Display Panels
The butyl-terminated biphenyl structure of CAS 1256601-37-2 provides higher molecular weight (442.37) and enhanced thermal stability compared to shorter-chain analogs. With a predicted clearing point above 85°C and density of 1.309 g/cm³, this compound is ideal for large-size (55–85 inch) 4K/8K display panels where maintaining liquid crystal order at elevated operating temperatures is critical for uniform image quality across the entire panel area. 2. Industrial & Medical Display Applications The extended butyl chain provides a broader nematic phase range and superior chemical stability under prolonged thermal stress. This makes CAS 1256601-37-2 suitable for formulating LC mixtures for industrial HMI panels, medical imaging displays, and ATMs that require continuous 24/7 operation with minimal performance drift over extended service life (50,000+ hours). 3. High-Contrast VA-Mode Television Displays The compound’s molecular rigidity from the butyl-biphenyl core contributes to high birefringence (Δn) and excellent optical anisotropy stability. When formulated into VA-mode LC mixtures, it supports contrast ratios exceeding 6000:1 with minimal light leakage at off-states, delivering deep blacks and accurate color reproduction for premium television and professional monitoring applications. |
| Contact | Contact person: James Zhang
Email: james.zhang@dakenchem.com |
Frequently Asked Questions：
Q1: What makes CAS 1256601-37-2 different from other fluorinated biphenyl LC compounds?
A: CAS 1256601-37-2 features a butyl terminal group, giving it higher molecular weight (442.37 g/mol) and enhanced thermal stability compared to ethyl analogs. The longer alkyl chain extends the nematic phase range, making it particularly suitable for large-size panels and applications requiring long-term thermal reliability.
Q2: What is the molecular formula and molecular weight?
A: The molecular formula is C23H17F7O, with a molecular weight of approximately 442.37 g/mol. The compound has a biphenyl core with butyl terminal chain, multiple fluorine substituents, and a trifluorophenoxy methyl group for strong negative dielectric anisotropy.
Q3: What are the typical electro-optical characteristics?
A: This butyl-terminated compound exhibits strong negative dielectric anisotropy (Δε ≈ -5 to -8), high voltage holding ratio (>99%), and excellent clearing point characteristics. These properties support high contrast ratios and stable performance in large-format VA-mode displays.
Q4: Is this compound suitable for large-size display panels?
A: Yes. The higher clearing point and broader nematic phase range from the butyl substitution ensure uniform liquid crystal alignment across large panel areas (55–85 inches), even at elevated operating temperatures common in big-screen applications.
Q5: 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 preserves chemical stability and electro-optical performance over the material’s shelf life.
Application Cases：
Case 1: 75-Inch 8K UHD Television Panel
A top-tier display manufacturer developing a 75-inch 8K VA-mode television needed LC materials that could maintain uniform alignment across the large panel area at elevated operating temperatures. CAS 1256601-37-2 was selected for its high clearing point and broad nematic phase range from the butyl-terminated structure. The final LC formulation achieved contrast ratio of 7000:1 with zero mura defects across the full panel, earning the display model a premium rating in independent image quality benchmarks.
Case 2: Medical Diagnostic Imaging Display
A medical device company developing a 32-inch 5MP diagnostic monitor for radiology required LC materials with exceptional long-term stability under continuous 24/7 operation. The compound’s thermal reliability and resistance to image sticking under constant backlight exposure made it ideal for this application. After 60,000 hours of accelerated aging tests at 60°C, the display maintained >98% of initial luminance uniformity, meeting IEC 60601-1 medical equipment safety standards.
Case 3: Industrial HMI Panel for Factory Automation
An industrial automation integrator needed durable LC materials for 21-inch HMI panels installed on factory production lines with ambient temperatures up to 60°C. The butyl-substituted compound maintained stable viscosity and dielectric properties at high temperatures, preventing display flicker and response degradation. The panels passed 10,000-hour continuous operation tests with no measurable performance drift, supporting the customer’s 5-year product warranty commitment.
Case 4: Premium Home Theater Projector
A projector manufacturer developing a native 4K LCoS projector required LC materials with high birefringence and excellent thermal stability for the compact optical engine. CAS 1256601-37-2’s molecular rigidity from the butyl-biphenyl core provided the needed Δn value while maintaining stability under the concentrated light source heat. The projector achieved native contrast ratio of 10,000:1 with accurate DCI-P3 color reproduction, positioning it in the premium home cinema segment.
Case 5: Airport Flight Information Display
An airport digital signage integrator deployed 200 units of 55-inch information displays requiring LC materials that could withstand continuous outdoor-adjacent operation (45°C ambient + solar heat). The compound’s high thermal stability prevented nematic-to-isotropic phase transition under worst-case conditions. After 18 months of field deployment across three international airports, zero display failures were reported, validating the material’s reliability for mission-critical public information systems.
