For any professional in the chemical industry, a thorough understanding of a compound's properties is fundamental to its effective utilization. Diethyl 4-Chlorobenzylphosphonate, bearing the CAS number 39225-17-7, is a significant organophosphorus compound whose physical and chemical characteristics dictate its suitability for various industrial and research applications. As a potential buyer, grasping these details will empower your selection process when you need to purchase from a manufacturer.

Chemically, Diethyl 4-Chlorobenzylphosphonate has the molecular formula C11H16ClO3P and a molecular weight of 262.67 g/mol. This composition imparts specific reactivity patterns, making it a valuable intermediate in organic synthesis. Its structure features a chlorobenzyl group attached to a diethyl phosphonate moiety, a combination that enables participation in reactions like the Horner-Wadsworth-Emmons reaction for forming carbon-carbon double bonds. This reactivity is particularly important when synthesizing complex organic molecules or precursors for pharmaceuticals and advanced materials.

Physically, Diethyl 4-Chlorobenzylphosphonate is typically described as a clear, colorless liquid. This appearance is consistent across various supplier specifications. Its density is reported as approximately 1.19 g/mL at 25°C, a useful parameter for volumetric calculations in chemical processes. The boiling point is noted around 162°C at atmospheric pressure, or more precisely, between 153-155°C under reduced pressure (0.6 mmHg), indicating its relative stability at moderate temperatures.

Another critical physical property for handling and safety is its flash point, which is reported at 230°F (approximately 110°C). This relatively high flash point suggests it is not highly flammable under normal ambient conditions, though standard precautions for handling organic chemicals should always be observed. The refractive index, n20/D, is listed as 1.509, a measurement that can be used for quality control and identification.

When considering purchasing Diethyl 4-Chlorobenzylphosphonate, it's important to note the typical purity levels offered by manufacturers, often exceeding 97.0% or 98.0% (GC). Ensuring this level of purity is vital for applications where side reactions or impurities could compromise the final product, such as in the synthesis of OLED materials or active pharmaceutical ingredients. Therefore, when you seek to buy this chemical, always consult the supplier's specifications and request detailed Certificates of Analysis.

In conclusion, understanding the physical and chemical properties of Diethyl 4-Chlorobenzylphosphonate (CAS: 39225-17-7)—from its molecular structure and reactivity to its appearance, density, boiling point, and flash point—is essential for effective procurement and application. Manufacturers providing this compound offer it with specific purity grades, making informed selection crucial for successful research and production outcomes.