Tris(2-ethylhexyl) Phosphate (TOP)

Tris(2-ethylhexyl) Phosphate, commonly abbreviated as TOP or TEHP, is a versatile organophosphate ester widely used as a flame retardant plasticizer in polymers and industrial applications. TOP combines excellent low-temperature flexibility, flame retardancy, and compatibility with various resins. It is a clear, colorless to pale yellow viscous liquid with a faint characteristic odor.

This specialty chemical enhances product performance in demanding environments, making it ideal for manufacturers seeking non-halogenated flame retardant solutions with good cold resistance.

Technical Specifications

ITEMS	SPECIFICATIONS
Appearance	Transparent, oily liquid with no visible impurities
Content (GC)	≥99.0%
Dioctyl phosphate content (GC)	≤0.2%
Octanol content (GC)	≤0.15%
Surface tension,mN/m (20-25℃)	≥18
Acid value, mgKOH/g	≤0.2
Colourity (Pt-Co)	≤30
Density, g/mL	0.921-0.927
Water content	≤0.2%
Viscosity (cp)25℃mm2/s	≤20

Packaging and Storage

• Net weight 180kg iron drum or 1000kg IBC drum.

• Stored at dry, shady, ventilated place. Prevented from collision and sunrays, rain-attack during handling and shipping.

Key Features and Benefits

• Superior flame retardant properties through phosphorus-based mechanism.

• Excellent plasticizing effect, improving flexibility at low temperatures.

• Good compatibility with PVC, polyurethane (PU), nitrile butadiene rubber (NBR), and other polymers.

• Acts as a carrier for pigments and dyes in polymer coloring.

• Mild solvent and additive properties in specialized applications.

• Low volatility and high thermal stability for durable formulations.

Primary Applications

• Flame Retardant Plasticizer in PVC, PU, and synthetic rubbers for cables, flooring, films, and coatings requiring fire safety and flexibility.

• Additive in vinyl stabilizers, grease compositions, and flame-proofing formulations.

• Carrier solvent for pigments/dyes in polymer processing.

• Component in metal casting release agents.

• Additive in cutting fluids and lubricants.

• Solvent in hydrogen peroxide production processes.

TOP is particularly valued in applications where halogen-free flame retardancy and cold flexibility are critical.

Frequently Asked Questions (FAQs)

Q: What is Tris(2-ethylhexyl) Phosphate (TOP) used for?

A: TOP is primarily used as a flame retardant plasticizer in polymers like PVC and PU, providing both fire resistance and low-temperature flexibility. It also serves as a pigment carrier, solvent in peroxide synthesis, and additive in cutting fluids and release agents.

Q: Is TOP a halogen-free flame retardant?

A: Yes, TOP is a phosphorus-based, non-halogen flame retardant that promotes char formation and reduces flammability without releasing halogen gases.

Q: What polymers is TOP compatible with?

A: It shows excellent compatibility with PVC, polyurethane (PU), nitrile butadiene rubber (NBR), and other vinyl/synthetic polymers.

Q: Is TOP safe to handle?

A: Follow standard chemical handling practices. It causes skin and eye irritation and may irritate the respiratory tract. Use PPE and ensure good ventilation. 

Q: Does TOP have low-temperature performance advantages?

A: Yes, it imparts excellent cold flexibility to polymers, making it suitable for products used in low-temperature environments.

Contact Us

For COA, TDS, MSDS or other products, please contact us at:

Email: mandy@aozunchem.com

WhatsApp: +86-18452425579

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