Overview
p-Terphenyl is an aromatic hydrocarbon consisting of three benzene rings connected linearly. It is widely recognized for its role as a high-purity standard in analytical chemistry, particularly in chromatography and scintillation counting. As a stable organic compound, p-Terphenyl is synthesized through controlled reactions to achieve the required purity levels, often exceeding 99%. Its consistent properties make it a reliable reference material in laboratories and industrial applications.
Physical and Chemical Properties
p-Terphenyl exhibits a crystalline structure with a distinct white powder appearance. Its molecular weight of 230.31 g/mol and density of 1.16 g/cm³ reflect its compact aromatic composition. The compound is insoluble in water but dissolves readily in non-polar solvents such as benzene and toluene. Its melting point ranges between 212-214°C, and it degrades at temperatures above 389°C, making it stable under typical laboratory conditions.
Main Applications
In chromatography, p-Terphenyl serves as a calibration standard due to its predictable retention behavior and high purity. It is also employed in scintillation counting, where its fluorescence properties enhance detection efficiency. Beyond analytical uses, p-Terphenyl acts as an intermediate in organic synthesis, contributing to the production of specialized polymers and liquid crystals. Its role in research and quality control underscores its importance in chemical and pharmaceutical industries.
Safety and Storage
While p-Terphenyl is not highly toxic, prolonged exposure to dust or vapors should be avoided. Proper personal protective equipment (PPE), including gloves and goggles, is recommended during handling. Storage requires a cool, dry environment away from direct sunlight and moisture. Sealed containers are essential to prevent contamination and degradation, ensuring the compound retains its efficacy over time.
B2B Procurement Guide
When sourcing p-Terphenyl, prioritize suppliers with certifications such as ISO or GMP to guarantee purity and consistency. Request certificates of analysis (CoA) to verify specifications like ≥99% purity. Bulk purchases may offer cost advantages, but ensure proper storage capacity to maintain product integrity. Lead times can vary, so plan procurement to align with project timelines, especially for time-sensitive applications.
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