2-Ethylthiophene is an important heterocyclic compound widely used as a flavoring agent and pharmaceutical intermediate. This liquid exhibits a boiling point of 132-134°C (lit.) with a density of 0.99 g/mL at 25°C and refractive index of 1.513 (n20/D). It has limited water solubility (0.29 g/L) and emits a characteristic sulfurous odor. As a thiophene derivative, it serves as a key building block for conducting polymers and organic electronic materials. Storage should be in sealed containers under inert atmosphere at room temperature, protected from light. Safety precautions include using proper ventilation due to its flammability (Flash point: 21°C) and potential skin/eye irritation.
