Triethyl Phosphate CAS 78-40-0

Guolan New Materials (Shandong) Co., Ltd. is one of the leading manufacturers and suppliers of triethyl phosphate cas 78-40-0 in China. With a professional production team, we are able to meet the needs of the majority of our customers. Welcome to wholesale bulk top-quality triethyl phosphate cas 78-40-0 from our factory.

Triethyl Phosphate CAS 78-40-0 (TEP) is a versatile high-boiling-point organic phosphate ester widely used across multiple industrial sectors including solvents, catalysts, plasticizers, and flame retardants. With its excellent chemical stability, low toxicity, and broad solubility profile, TEP serves as an indispensable additive in the production of cellulose acetate, nitrocellulose coatings, epoxy resins, and synthetic rubber. Guolan New Materials manufactures TEP using advanced continuous synthesis technology, ensuring consistent purity levels (99.5% to 99.9%) that meet the stringent requirements of global B2B buyers.

As a premium solvent, TEP dissolves nitrocellulose, cellulose acetate, resins, and synthetic rubbers without leaving residues. As a catalyst, it facilitates xylene isomerization, olefin polymerization, carbodiimide synthesis, and ketene production from acetic acid dehydration. Its role as a stabilizer extends to chlorinated insecticides, phenolic resins, and sugar alcohol resins. Additionally, TEP functions as a curing agent for xyleneol-formaldehyde resin, a softener for phenolic shell molding resins, and a flame retardant for polyester resins.

Guolan New Materials operates a state-of-the-art production facility in Shandong Province with annual capacity of 15,000 MT. Our rigorous quality control system ensures every batch meets international standards, supported by ISO 9001:2015 certification. We serve customers across Asia, Europe, North America, and beyond, offering flexible packaging, OEM services, and reliable year-round supply.

• Exceptional Solvent Power: TEP efficiently dissolves nitrocellulose, cellulose acetate, vinyl resins, and synthetic rubbers, making it ideal for coating, adhesive, and film manufacturing applications.
• Multi-Function Catalyst: Acts as catalyst for xylene isomerization, olefin polymerization, carbodiimide synthesis, and ketene production, reducing the need for multiple specialized chemicals.
• High Purity Options: Available in 99.5% and 99.9% grades to meet diverse industrial specifications, from general-purpose applications to high-performance electronics-grade requirements.
• Excellent Thermal Stability: High boiling point ensures minimal evaporation during high-temperature processing, maintaining consistent product quality and reducing material waste.
• Low Toxicity Profile: TEP exhibits relatively low toxicity compared to alternative phosphate esters, supporting safer workplace conditions and easier regulatory compliance.
• Flexible Packaging & OEM: We offer 250kg iron drums, 500kg plastic drums, and tank car deliveries. Custom labeling, private labeling, and tailored specifications available for bulk buyers.

Solvent for Cellulosic Materials

TEP is extensively used as a solvent for nitrocellulose and cellulose acetate in the production of films, coatings, and lacquers. Its high boiling point and excellent dissolving power ensure uniform film formation without blushing or cloudiness. Applications include aircraft coatings, automotive clear coats, and printable film substrates where clarity and durability are paramount.

Catalyst in Chemical Synthesis

TEP serves as an essential catalyst in xylene isomerization, olefin polymerization, carbodiimide production, and the high-temperature dehydration of acetic acid to produce ketene. It also catalyzes the polymerization of styrene and conjugated dienes while preventing fiber discoloration in polyester synthesis. Its versatility reduces process complexity and improves reaction yields.

Plasticizer & Stabilizer

As a plasticizer, TEP improves flexibility and workability in vinyl acetate polymers, polyvinyl chloride compounds, and synthetic rubbers. As a stabilizer, it protects chlorinated insecticides from degradation, enhances phenolic resin performance, and acts as a solidifying agent for sugar alcohol resins. Its dual functionality reduces formulation complexity and cost.

Flame Retardant for Polymers

TEP functions as an effective flame retardant for polyester resins and various thermoplastics. Its incorporation into polymer matrices significantly improves fire resistance while maintaining mechanical properties. Used in construction materials, electrical components, and transportation applications where flame spread resistance is regulated.

• Three Functions From One Drum: Solvent, catalyst and flame retardant duties are all covered by this single phosphate ester, so several specialty inputs can be consolidated into one supply line and one incoming-inspection routine instead of three.
• Two Purity Grades On One Platform: Both the 99.5% and 99.9% grades come off the same continuous synthesis train, which means moving between general industrial and electronics-grade demand never requires qualifying a second supplier.
• Tight Control Of Colour-Critical Impurities: Acid value is held to 0.05 mg KOH/g maximum and chromaticity to 10 APHA maximum on every batch - the two parameters that most often cause yellowing in nitrocellulose lacquers and cellulose acetate film.
• High-Boiling Stability Under Heat: Low vapour pressure keeps evaporation losses minimal during elevated-temperature processing, which improves workplace air quality and reduces make-up dosing between batches.
• Documented Batch By Batch: Every shipment carries a Certificate of Analysis covering content, refractive index, density, moisture and acid value, and third-party inspection before delivery is welcome.

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