Overview
Biphenyl-4, chemically known as 4-phenylbiphenyl, is an aromatic hydrocarbon derived from biphenyl. It is widely used as an intermediate in organic synthesis and in the production of liquid crystals. The compound is characterized by its stable structure and compatibility with various organic solvents. Due to its role in liquid crystal displays (LCDs), biphenyl-4 is a critical component in the electronics industry. Its synthesis involves the coupling of benzene rings, resulting in a compound with unique electronic properties.
Physical and Chemical Properties
Biphenyl-4 appears as a white to off-white crystalline powder with a melting point of approximately 70-72°C. It is soluble in common organic solvents such as ethanol and ether but exhibits negligible solubility in water. The compound's stability under normal conditions makes it suitable for long-term storage. Its aromatic nature contributes to its reactivity in electrophilic substitution reactions, which is exploited in various synthetic applications.
Main Applications
The primary use of biphenyl-4 is as an intermediate in the synthesis of more complex organic compounds. It is particularly valued in the production of liquid crystals, which are essential for LCD screens in televisions, monitors, and smartphones. Additionally, biphenyl-4 finds applications in pharmaceuticals and agrochemicals, where it serves as a building block for active ingredients. Its versatility in chemical reactions makes it a staple in research and industrial laboratories.
Safety and Storage
Biphenyl-4 should be handled with care to avoid inhalation, ingestion, or skin contact. Personal protective equipment (PPE), including gloves and goggles, is recommended when working with this compound. Storage conditions should include a cool, dry environment away from direct sunlight and moisture. Properly sealed containers are necessary to prevent contamination and degradation over time.
B2B Procurement Guide
When procuring biphenyl-4, buyers should prioritize suppliers who provide a Certificate of Analysis (COA) and a Safety Data Sheet (SDS). These documents ensure the product meets purity and safety standards. Price ranges vary based on purity and supplier, with typical costs between $50 and $100 per kilogram. Bulk purchases may qualify for discounts, so negotiating with suppliers is advisable for large-scale buyers.
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