Physical and Chemical Properties
1. Physical Properties
Appearance and State: Typically a white to pale yellow crystalline powder or viscous liquid at room temperature (lower purity may be liquid; high-purity products tend to crystallize easily).
Melting Point: Approximately 54-58°C (The melting point range may fluctuate slightly due to impurity levels in samples of different purities; high-purity products tend to have melting points closer to the upper limit).
Solubility: Freely soluble in organic solvents such as dichloromethane, chloroform, ethyl acetate, and tetrahydrofuran; poorly soluble in water, practically insoluble in water. This property facilitates separation operations in organic synthesis.
Stability: Stable when stored at room temperature, in a dry place, and protected from light. Avoid prolonged contact with strong oxidants (e.g., potassium permanganate, peroxides) and strong bases (e.g., sodium hydroxide, potassium hydroxide), as oxidation or ester hydrolysis may occur.