Overview
Diethyl phosphate (DEP) is an organophosphate compound primarily used as an intermediate in chemical synthesis. It is a derivative of phosphoric acid, where two ethyl groups replace two of the hydroxyl groups. DEP is widely utilized in the production of agrochemicals, flame retardants, and pharmaceuticals due to its reactivity and stability. In industrial settings, DEP is valued for its role in synthesizing more complex organophosphate compounds. Its relatively low toxicity compared to other phosphates makes it a preferred choice in certain applications, though safety precautions are still necessary.
Physical and Chemical Properties
Diethyl phosphate is a colorless to pale yellow liquid with a molecular weight of 154.10 g/mol. It has a density of approximately 1.07 g/cm³ and a boiling point around 203°C. The compound is soluble in water and most organic solvents, which enhances its versatility in chemical processes. DEP exhibits moderate stability under normal conditions but can decompose when exposed to strong oxidizing agents. Its key chemical property is its ability to act as a flame retardant, making it useful in materials requiring fire resistance.
Main Applications
Diethyl phosphate is predominantly used in the agrochemical industry as an intermediate for pesticides and herbicides. Its ability to inhibit certain enzymes makes it effective in pest control formulations. Additionally, DEP serves as a flame retardant in plastics, textiles, and coatings, where it helps reduce flammability. In the pharmaceutical sector, DEP is employed in the synthesis of certain drugs, particularly those targeting the nervous system. Its role as a chemical intermediate extends to the production of specialty chemicals used in various industrial processes.
Safety and Storage
Diethyl phosphate requires careful handling due to its potential to cause skin and eye irritation. Workers should use personal protective equipment (PPE), including gloves and goggles, when handling the compound. In case of exposure, immediate washing with water is recommended. Storage conditions for DEP should include a cool, dry, and well-ventilated area, away from oxidizing agents. Containers must be tightly sealed to prevent moisture absorption and degradation. Proper labeling and compliance with local safety regulations are essential for safe storage.
B2B Procurement Guide
When procuring diethyl phosphate, B2B buyers should prioritize suppliers who provide certificates of analysis (CoA) to verify purity and quality. The reference price range is approximately $50-$200 per kilogram, depending on purity and supplier reputation. Buyers are advised to assess the supplier’s compliance with international safety standards, such as REACH or OSHA regulations. Bulk purchases may offer cost advantages, but storage capacity and shelf-life considerations should be evaluated. Always confirm lead times and shipping conditions to ensure the product arrives in optimal condition.
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