is trimethyl citrate a crystal

Trimethyl citrate is an ester of citric acid and is typically found in a liquid or viscous form at room temperature. It is not commonly recognized as a crystalline solid. However, its physical state can depend on factors such as temperature and purity. In some cases, it might crystallize under specific conditions, but it is generally regarded as a liquid compound. If you're looking for specific information about its forms or applications, please provide more context!