Methyl 3-methoxyacrylate, a key organic compound with the CAS number 34846-90-7, plays a significant role across various chemical industries, particularly in pharmaceutical synthesis. Understanding its intrinsic chemical and physical properties is fundamental for its effective and safe utilization in industrial processes. This compound, also known by synonyms such as methyl 3-methoxyacrylate and methyl 3-methoxy-2-propenoate, presents a unique profile that dictates its handling, storage, and application.

Physically, Methyl 3-methoxyacrylate is characterized as a colorless or light yellow liquid. This visual attribute is often the first indicator of its purity and state. Its density is recorded at 1.013 g/cm³, a value that provides crucial information for volumetric calculations in chemical processes and for determining its behavior in mixtures or solutions. The boiling point of Methyl 3-methoxyacrylate is 155.3ºC at a standard atmospheric pressure of 760 mmHg. This relatively high boiling point suggests it is not excessively volatile at room temperature, which is advantageous for handling and storage. However, its flash point is noted at 62.8±0.0 °C. This indicates that the compound is flammable and requires careful management to prevent ignition risks, emphasizing the need for well-ventilated areas and avoidance of open flames or sparks during its use.

Further contributing to its physical characteristics is its refractive index, measured at 1.417. This optical property can be used for quality control and identification purposes. While some sources may list an unusually high melting point, reliable data and practical application suggest it remains a liquid under typical ambient conditions, aligning with its storage recommendations of 0-6ºC. This temperature range is crucial for maintaining its stability and preventing degradation or unwanted reactions.

In terms of chemical specifications, Methyl 3-methoxyacrylate typically boasts a high purity level, often ≥99.0%. This high degree of purity is essential for its primary application as an intermediate in pharmaceutical synthesis, where trace impurities can significantly impact reaction outcomes and the quality of the final product. Furthermore, its methanol content is kept very low, usually ≤0.5%, minimizing potential side reactions or contamination from this common solvent.

The packaging and storage of Methyl 3-methoxyacrylate are also critical aspects derived from its properties. It is commonly supplied in 25kg cardboard drums or tailored to customer specifications, designed for safe transport. Storage in tightly closed containers, in a cool, dry, and well-ventilated area, away from incompatible substances, is paramount to preserving its integrity. The stringent quality standards and handling protocols reflect the compound's importance in precision-driven industries.

In summary, the chemical and physical properties of Methyl 3-methoxyacrylate – its liquid state, density, boiling and flash points, high purity, and specific storage requirements – collectively define its role and handling in industrial chemistry. These characteristics are vital for manufacturers and researchers who rely on this compound for successful and safe chemical synthesis, particularly in the critical field of pharmaceutical development.