Understanding the fundamental chemical properties and reliable synthesis routes of key reagents is crucial for any chemist or procurement specialist. Triethylphosphine (CAS: 554-70-1) is a prime example of such a compound, recognized for its unique characteristics and versatile applications in organic synthesis. As a premier manufacturer and supplier, we provide insights into these aspects, ensuring our clients can make informed decisions when they buy Triethylphosphine.

Triethylphosphine is an organophosphorus compound characterized by its physical state: a colorless, transparent liquid. Its boiling point is approximately 127-128 °C, and it has a density of 0.88 g/mL at 20 °C. A critical property to note is its low flash point (1 °F), classifying it as a highly flammable substance. Furthermore, its sensitivity to air, where it can oxidize to form phosphine oxides, and its characteristic pungent, nauseating odor, mandate careful handling in well-ventilated areas or fume hoods. These properties are vital considerations for storage and laboratory safety protocols.

The synthesis of Triethylphosphine is typically achieved through the reaction of a Grignard reagent, such as ethylmagnesium bromide, with phosphorus trichloride (PCl3) or triphenylphosphite. The reaction involves the nucleophilic attack of the Grignard reagent on the phosphorus atom, displacing chloride ions or phenoxide groups. For example, the reaction of three equivalents of ethylmagnesium bromide with phosphorus trichloride yields Triethylphosphine and magnesium bromide chloride. Ensuring stoichiometric control and appropriate reaction conditions is key to obtaining high yields and purity.

Purification methods for Triethylphosphine often involve fractional distillation under an inert atmosphere, such as nitrogen, to prevent oxidation. Alternative purification techniques may involve forming complexes with metal salts, which can then be decomposed to regenerate the pure phosphine. Understanding these synthesis and purification methods helps clarify why sourcing high-purity Triethylphosphine from a specialized manufacturer is advantageous. Our manufacturing processes are optimized to deliver Triethylphosphine that meets stringent purity requirements, providing reliability for your critical applications.

For professionals looking to purchase Triethylphosphine, understanding its chemical profile, synthesis, and handling requirements is essential. We offer high-quality Triethylphosphine at competitive prices, backed by our expertise as a leading chemical supplier in China. Contact us for detailed product specifications and to discuss your specific needs for this vital organic synthesis reagent.