Understanding the precise chemical and physical properties of a compound is fundamental to its successful application in research and industry. (E)-4-Methoxybut-2-enoic acid, identified by CAS number 63968-74-1, is a molecule whose characteristics make it a valuable chemical intermediate, particularly within organic synthesis. These properties dictate its behavior, stability, and suitability for various reactions.

The molecular formula of (E)-4-methoxybut-2-enoic acid is C5H8O3, giving it a molecular weight of approximately 116.11500 g/mol. This relatively small molecular size often contributes to its ease of handling and reactivity in synthetic processes. Its density is predicted to be around 1.098 ± 0.06 g/cm³, which is a standard parameter for characterizing liquid or solid chemical substances. The melting point, a crucial indicator of purity and physical state, is reported to be between 66-67 °C. This confirms it exists as a solid under ambient laboratory conditions, simplifying storage and measurement.

Furthermore, its acidity factor (pKa) is estimated to be 4.37 ± 0.10, indicating it is a weak organic acid. This property is significant for reactions involving acid-base chemistry or when used as a component in buffer systems or pH-sensitive processes. The compound is generally stable under normal temperature and pressure, and it is recommended to store it in a tightly closed container in a cool, dry, well-ventilated area away from incompatible substances to maintain its integrity. These storage conditions are standard for many fine chemicals, ensuring longevity and predictable performance.

For manufacturers and researchers looking to buy (E)-4-methoxybut-2-enoic acid, these detailed properties are essential for planning experimental procedures, ensuring safety, and achieving desired outcomes. NINGBO INNO PHARMCHEM CO.,LTD., as a reputable supplier in China, ensures that these properties are met consistently in their product. By providing high-purity (97%+) (E)-4-methoxybut-2-enoic acid, we empower our clients to utilize its unique chemical characteristics effectively in their innovative projects.