Phenylacetylene is a fundamental aromatic alkyne widely used in organic synthesis, particularly in Sonogashira coupling reactions and pharmaceutical intermediates. This terminal alkyne exhibits a melting point of -44.8°C and boiling point of 142-144°C with a characteristic density of 0.930 g/cm³ at 20°C. As a reactive building block, it participates in click chemistry and polymer synthesis. The compound should be stored under inert atmosphere (nitrogen/argon) at 2-8°C, protected from light. Safety precautions include flame-proof equipment due to its flammability (Flash point: 31°C) and proper ventilation to avoid inhalation exposure.
