Triethyl phosphate CAS 78-40-0 TEP
Triethyl phosphate CAS 78-40-0 TEP
TEP (Triethyl Phosphate) is a commonly used flame retardant, widely applied in fields such as plastics, rubber, and coatings.
Product Details
| Item | Quality indicators |
| Appearance | Colorless transparent liquid |
| Assay | 99.5% min |
| Refractive index(nD20) | 1.4050-1.4070 |
| Acid value(mgKOH/g) | ≤0.05 |
| Specific gravity(20/20℃) | 1.069-1.073 |
| Chroma | ≤20 |
| Moisture | ≤0.2% |
product advantages
1. Excellent Solvent Power
•TEP is an exceptionally strong solvent for a wide range of polymers, resins, and organic substances, including cellulose acetate, nitrocellulose, and many resins.
•It serves as a high-boiling-point solvent in coatings, inks, and adhesives, helping to retard drying time and improve flow and leveling.
2. High Reactivity & Versatile Intermediate
•This is one of TEP's most significant advantages. Its ethyl groups are readily displaceable through hydrolysis or transesterification, making it a key precursor for synthesizing numerous high-value chemicals.
•It is most notably a critical intermediate in the production of the herbicide glyphosate.
•It is also used to synthesize other organophosphorus compounds, including pesticides, pharmaceuticals, and other phosphate esters.
3. Effective Plasticizer
•TEP acts as an efficient plasticizer for various resins, particularly cellulose esters, enhancing their flexibility and processability.
•Compared to higher molecular weight phosphates (e.g., TPP), it has a lower viscosity, making it easier to handle and incorporate.
4. Catalytic Applications
•TEP can function as a catalyst or catalyst component in certain organic synthesis reactions, such as esterifications and condensations.
product applications
1. Chemical Synthesis Intermediate (Primary Application)
• Pesticide Manufacture: This is the single largest application for TEP. It is a fundamental raw material in the production of the widely used herbicide glyphosate.
• Pharmaceuticals & Fine Chemicals: Used as an intermediate in the synthesis of certain pharmaceuticals (e.g., analgesics) and other fine chemicals.
• Flame Retardant Synthesis: Serves as a starting material for synthesizing other, more complex phosphate ester flame retardants.
2. Solvent
• Specialty Coatings & Inks: Used as a solvent in cellulose lacquers, high-quality inks, and coatings, where high solvating power and controlled evaporation are required.
• Extraction Agent: Employed as a solvent for the extraction of aromatics from hydrocarbon streams and in the separation of rare metals.
• Lithium-Ion Battery Electrolyte Additive: Researched as a flame-retardant additive in electrolytes to improve battery safety, though challenges with electrode material compatibility remain.
3. Plasticizer
• Cellulose Plastics: Used as a plasticizer for cellulose acetate and nitrocellulose in films and sheets to impart flexibility.
• Resin Modification: Acts as a plasticizer for certain phenolic and epoxy resins.
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