Triethyl Phosphate (CAS 78-40-0) is a halogen-free trialkyl phosphate used as a flame retardant and viscosity reducer in unsaturated polyester resins, polyurethane foams, and intumescent coatings. It also acts independently as a solvent and chemical intermediate. Its low viscosity and high phosphorus content make it a versatile halogen-free phosphorus source.
What is Triethyl Phosphate
Triethyl Phosphate (CAS 78-40-0) is a clear, low-viscosity liquid trialkyl phosphate. Completely halogen-free, it is widely employed where a mobile, phosphorus-rich liquid is required: as a flame retardant, viscosity reducer, solvent, and building block.
Fire Performance
As a phosphorus-based flame retardant, it acts primarily in the condensed phase, promoting char formation that protects the polymer, with some activity in the vapor phase. Due to its low viscosity, it reduces resin viscosity simultaneously, which is highly valued in unsaturated polyester resin (UPR) and molding systems, eliminating the need for a separate diluent.
Applications
Triethyl Phosphate is used as a halogen-free flame retardant and viscosity reducer in unsaturated polyester resins, polyurethane foams, and intumescent coatings. It also functions separately as a solvent and chemical intermediate (building block and component of catalysis/curing in various processes). For applications requiring higher temperatures or solid flame retardants, compare with TPP and TMP.
Forms, Grades, and Handling
Triethyl Phosphate is supplied as a clear, low-viscosity liquid in drums, IBCs, and bulk. The listed properties are typical reference values; the Certificate of Analysis (CoA) of the purchased lot governs. Handle according to the current Safety Data Sheet (SDS) and confirm regulatory status and restrictions for your market and end-use, as flame retardant regulation is constantly evolving. Each lot includes CoA, TDS, and SDS.
Bulk Supply and RFQ
RawSource supplies Triethyl Phosphate directly from producers in bulk, with CoA, TDS, and SDS per lot. Inform us of your polymer or system, the fire test that must be passed, your maximum loading, and whether the application requires being halogen-free. We will quote the appropriate grade. Consult the flame retardant guide to view the full range and selection logic.
Perguntas frequentes
What is Triethyl Phosphate used for?
Triethyl Phosphate (CAS 78-40-0) is a halogen-free trialkyl phosphate, used as a flame retardant and viscosity reducer in unsaturated polyester resins, polyurethane foams, and intumescent coatings. It also acts independently as a solvent and chemical intermediate. Its low viscosity and high phosphorus content make it a versatile halogen-free phosphorus source.
Is Triethyl Phosphate a halogen-free flame retardant?
Yes. Triethyl Phosphate contains no bromine or chlorine. It is a halogen-free, phosphorus-based flame retardant that acts primarily by promoting char formation in the condensed phase.
What is the CAS number and formula of Triethyl Phosphate?
Triethyl Phosphate is CAS 78-40-0, molecular formula C6H15O4P, molecular weight 182.15 g/mol (PubChem CID 6535). The CoA documents the grade.
How is bulk Triethyl Phosphate supplied and quoted?
RawSource supplies bulk Triethyl Phosphate with CoA, TDS, and SDS per lot. The price is based on quotation, varying by grade and volume. Send an RFQ with your target quantity, polymer/system, and the fire test that must be passed.
What is the REACH and TSCA regulatory status of Triethyl Phosphate?
Triethyl Phosphate (CAS 78-40-0) is subject to US TSCA Inventory requirements; its supply in the EU requires valid REACH registration ((EC) No 1907/2006). RawSource cannot verify third-party supplier registrations — buyers must demand documented compliance with TSCA and REACH for their jurisdiction and volume (EC 201-114-5).