TRIOCTYL TRIMELLITATE TOTM

Trioctyl Trimellitate TOTM is a high-performance trimellitate ester plasticizer used mainly in PVC and other polymers where high-temperature durability and low volatility are required, and Trioctyl Trimellitate TOTM is valued for excellent permanence, low migration, and strong heat-aging resistance.
Trioctyl Trimellitate TOTM is widely used in wire and cable compounds, automotive interior parts, medical and flexible PVC products, and specialty elastomer formulations, and Trioctyl Trimellitate TOTM performance depends on ester purity, alcohol chain distribution, compatibility with the polymer, and the processing and service temperature profile.
Trioctyl Trimellitate TOTM is typically supplied as a clear to pale yellow viscous liquid, and Trioctyl Trimellitate TOTM is handled as a low-volatility plasticizer with good processing stability, but standard industrial hygiene practices are still required.

CAS Number: 3319-31-1
EC Number: 222-020-0
Molecular Formula: C33H54O6
Molecular Weight: 546.78 g/mol

Synonyms: Trioctyl Trimellitate TOTM, TOTM, Trioctyl Trimellitate, Tri(2-ethylhexyl) Trimellitate, Tris(2-ethylhexyl) Trimellitate, Trimellitic Acid Trioctyl Ester, Trimellitate Plasticizer, High Temperature Plasticizer TOTM, PVC Plasticizer TOTM, Low Migration Plasticizer, Trimellitate Ester Plasticizer, Trioctyl Trimellitate Ester, Trioctyl Trimellitate TOTM, Trioctyl Trimellitate, TOTM, TOTM Plasticizer, Trioctyl Trimellitate Plasticizer, Tri-2-ethylhexyl Trimellitate, Tris(2-ethylhexyl) Trimellitate, Tri(2-ethylhexyl) Trimellitate, Tris(ethylhexyl) Trimellitate, Triethylhexyl Trimellitate, 1,2,4-Benzenetricarboxylic Acid Tris(2-ethylhexyl) Ester, Benzene-1,2,4-tricarboxylic Acid Tris(2-ethylhexyl) Ester, Tris(2-ethylhexyl) Benzene-1,2,4-tricarboxylate, Trimellitic Acid Tris(2-ethylhexyl) Ester, Trimellitic Acid Tri-2-ethylhexyl Ester, Trioctyl Benzene-1,2,4-tricarboxylate, Octyl Trimellitate, Triisooctyl Trimellitate, Triisononyl Trimellitate, Trimellitate Plasticizer, Trimellitic Ester Plasticizer, Trimellitate Ester TOTM, TOTM Ester Plasticizer, TOTM PVC Plasticizer, PVC Plasticizer TOTM, Vinyl Plasticizer TOTM, Flexible PVC Plasticizer TOTM, Wire and Cable Plasticizer TOTM, Cable Grade TOTM

APPLICATIONS

Trioctyl Trimellitate TOTM is used in wire and cable PVC insulation to provide long-term flexibility and heat resistance under elevated operating temperatures.
Trioctyl Trimellitate TOTM is incorporated into cable jacketing compounds to reduce plasticizer loss and maintain mechanical performance over time.
Trioctyl Trimellitate TOTM is used in automotive wire harness compounds where low volatility and high temperature durability are required.

Trioctyl Trimellitate TOTM is used in high-temperature PVC compounds to reduce migration and maintain softness during heat aging.
Trioctyl Trimellitate TOTM is incorporated into flexible PVC sheets and films where low fogging and high permanence are desired.
Trioctyl Trimellitate TOTM is used in under-hood or high-heat industrial components in selected polymer systems.

Trioctyl Trimellitate TOTM is used in automotive interior parts to reduce fogging and maintain long-term flexibility and appearance.
Trioctyl Trimellitate TOTM is incorporated into dashboards, trim, and interior skins in selected formulations to improve permanence and odor stability.
Trioctyl Trimellitate TOTM is used in upholstery and synthetic leather in selected applications for durable softness and low migration.

Trioctyl Trimellitate TOTM is used in medical-grade flexible PVC in selected applications where plasticizer permanence and low extraction are important.
Trioctyl Trimellitate TOTM is incorporated into tubing, bags, and medical films in selected cases where compatibility and regulatory compliance are met.
Trioctyl Trimellitate TOTM is used in food-contact and sensitive applications in selected cases where approvals and compliance requirements are satisfied.

Trioctyl Trimellitate TOTM is valued because Trioctyl Trimellitate TOTM provides excellent permanence, low volatility, and strong heat-aging resistance, supporting long service life in demanding flexible polymer applications.

Trioctyl Trimellitate TOTM is used as a specialty plasticizer in flexible PVC formulations.
Trioctyl Trimellitate TOTM improves softness and flexibility in vinyl compounds.
Trioctyl Trimellitate TOTM is used in high-temperature PVC applications.
Trioctyl Trimellitate TOTM supports long-term performance during heat exposure.

Trioctyl Trimellitate TOTM is used in wire and cable insulation.
Trioctyl Trimellitate TOTM improves thermal aging resistance in electrical insulation compounds.
Trioctyl Trimellitate TOTM is used in cable jacketing materials.
Trioctyl Trimellitate TOTM helps maintain flexibility and durability in demanding service conditions.

Trioctyl Trimellitate TOTM is used in automotive wiring applications.
Trioctyl Trimellitate TOTM supports low volatility in engine-area and cabin-area cable systems.
Trioctyl Trimellitate TOTM is used in appliance wiring compounds.
Trioctyl Trimellitate TOTM improves heat stability in electrical components exposed to elevated temperatures.

Trioctyl Trimellitate TOTM is used in automotive interior materials.
Trioctyl Trimellitate TOTM helps reduce fogging caused by plasticizer volatilization.
Trioctyl Trimellitate TOTM is used in dashboard skins and interior trim materials.
Trioctyl Trimellitate TOTM supports surface stability and long-term appearance.

Trioctyl Trimellitate TOTM is used in synthetic leather formulations.
Trioctyl Trimellitate TOTM improves softness, flexibility, and durability in coated fabrics.
Trioctyl Trimellitate TOTM is used in vinyl flooring materials.
Trioctyl Trimellitate TOTM supports wear resistance and dimensional stability in flexible floor coverings.

Trioctyl Trimellitate TOTM is used in wall covering formulations.
Trioctyl Trimellitate TOTM provides durable flexibility in decorative vinyl layers.
Trioctyl Trimellitate TOTM is used in PVC film production.
Trioctyl Trimellitate TOTM improves handling, softness, and long-term flexibility in films.

Trioctyl Trimellitate TOTM is used in PVC sheet production.
Trioctyl Trimellitate TOTM helps maintain flexibility after processing and aging.
Trioctyl Trimellitate TOTM is used in medical-grade PVC formulations where suitable grades are selected.
Trioctyl Trimellitate TOTM supports low migration and durable flexibility in selected medical materials.

Trioctyl Trimellitate TOTM is used in tubing formulations.
Trioctyl Trimellitate TOTM improves resistance to extraction and plasticizer loss.
Trioctyl Trimellitate TOTM is used in hose compounds.
Trioctyl Trimellitate TOTM supports flexibility and service durability in demanding environments.

Trioctyl Trimellitate TOTM is used in gasket formulations.
Trioctyl Trimellitate TOTM helps provide flexible sealing performance.
Trioctyl Trimellitate TOTM is used in seal and profile compounds.
Trioctyl Trimellitate TOTM supports resistance to compression, heat, and migration.

Trioctyl Trimellitate TOTM is used in plastisol formulations.
Trioctyl Trimellitate TOTM helps provide stable processing and durable fused PVC properties.
Trioctyl Trimellitate TOTM is used in coated textile applications.
Trioctyl Trimellitate TOTM improves flexibility and heat resistance in coated fabric systems.

Trioctyl Trimellitate TOTM is used in conveyor belt compounds.
Trioctyl Trimellitate TOTM helps maintain performance under mechanical and thermal stress.
Trioctyl Trimellitate TOTM is used in tarpaulin and industrial fabric coatings.
Trioctyl Trimellitate TOTM supports long-term flexibility in outdoor and industrial use.

Trioctyl Trimellitate TOTM is used in adhesive formulations.
Trioctyl Trimellitate TOTM improves flexibility in selected polymer adhesive systems.
Trioctyl Trimellitate TOTM is used in sealant and caulk formulations.
Trioctyl Trimellitate TOTM supports aging resistance and elastic performance.

DESCRIPTION

Trioctyl Trimellitate TOTM is the triester of trimellitic acid with octyl alcohols, most commonly 2-ethylhexanol, and this bulky triester structure gives Trioctyl Trimellitate TOTM very low volatility and low migration.
Trioctyl Trimellitate TOTM plasticizes PVC by reducing intermolecular forces and increasing chain mobility, and compared with many phthalate plasticizers, TOTM generally shows improved permanence at elevated temperatures.
Trioctyl Trimellitate TOTM can reduce fogging in automotive interiors because it is less likely to volatilize and condense on surfaces, and this supports improved long-term appearance.

Trioctyl Trimellitate TOTM is typically compatible with PVC and many vinyl copolymers, but formulation balance with stabilizers and fillers determines final mechanical and thermal performance.
Trioctyl Trimellitate TOTM can increase compound viscosity compared with lighter plasticizers, so processing temperature and shear conditions are optimized to maintain throughput.
Trioctyl Trimellitate TOTM should be used according to applicable regulations and good industrial hygiene practices for the target market and end-use category.

Trioctyl Trimellitate TOTM should be stored in tightly closed containers and protected from contamination to maintain consistent color and acid value.
Trioctyl Trimellitate TOTM should be kept away from strong oxidizers and excessive heat to minimize degradation.
Trioctyl Trimellitate TOTM should be handled with clean transfer equipment and good housekeeping because viscous liquids can create slip hazards.

Trioctyl Trimellitate TOTM is a trimellitate ester plasticizer.
Trioctyl Trimellitate TOTM is commonly used in flexible PVC systems.
Trioctyl Trimellitate TOTM is valued for low volatility and good permanence.
Trioctyl Trimellitate TOTM is widely recognized by the abbreviation TOTM.

Trioctyl Trimellitate TOTM is typically supplied as a clear to pale yellow oily liquid.
Trioctyl Trimellitate TOTM has a relatively high molecular weight compared with many general-purpose plasticizers.
Trioctyl Trimellitate TOTM provides durable flexibility in demanding vinyl formulations.
Trioctyl Trimellitate TOTM shows good resistance to migration and extraction.

Trioctyl Trimellitate TOTM is selected where high heat resistance is required.
Trioctyl Trimellitate TOTM helps reduce plasticizer loss during prolonged thermal exposure.
Trioctyl Trimellitate TOTM can support low-fogging performance in automotive interiors.
Trioctyl Trimellitate TOTM is compatible with many PVC resin systems.

Trioctyl Trimellitate TOTM performance depends on resin type, stabilizer system, filler level, and processing conditions.
Trioctyl Trimellitate TOTM may be blended with other plasticizers to balance cost, processability, and performance.
Trioctyl Trimellitate TOTM can provide better permanence than many lower-molecular-weight plasticizers.
Trioctyl Trimellitate TOTM is useful where flexibility must be retained over long service life.

Trioctyl Trimellitate TOTM should be stored in tightly closed containers.
Trioctyl Trimellitate TOTM should be protected from excessive heat, moisture, and contamination.
Trioctyl Trimellitate TOTM should be handled with standard industrial hygiene practices.
Trioctyl Trimellitate TOTM should be used according to supplier safety data and regulatory requirements.

Trioctyl Trimellitate TOTM quality may be defined by color, acidity, ester content, volatility, and moisture level.
Trioctyl Trimellitate TOTM is valued in wire, cable, automotive, medical, and specialty vinyl applications.
Trioctyl Trimellitate TOTM provides a balance of flexibility, thermal durability, and plasticizer permanence.
Trioctyl Trimellitate TOTM is an important specialty plasticizer for high-performance PVC compounds.

PROPERTIES

Chemical Formula: C33H54O6
Molecular Weight: 546.78 g/mol
Common Name: Trioctyl Trimellitate (TOTM)
Chemical Type: Trimellitate ester plasticizer; high-temperature plasticizer
Appearance: Clear to pale yellow viscous liquid
Odor: Mild characteristic odor
Solubility: Insoluble in water; soluble in many organic solvents; compatible with PVC and many polymers
Viscosity: High; temperature dependent
Volatility: Very low compared with many general-purpose plasticizers
Migration: Low; good permanence and extraction resistance
Density: ~0.98–0.99 g/cm³ (typical at 20°C; grade dependent)
Flash Point: Typically >200°C (typical; grade dependent)
Stability: Stable under normal storage; good heat-aging performance in polymers
Storage Temperature: 10–30°C, tightly closed, dry
Shelf Life: Typically 24–60 months in original sealed packaging (supplier dependent)

FIRST AID

Inhalation:
Move to fresh air if mists are inhaled.
Seek medical attention if respiratory irritation persists.
Avoid breathing aerosols during spraying or heated processing that generates mist.

Skin Contact:
Wash with soap and water after contact.
Remove contaminated clothing and wash before reuse.
Seek medical advice if irritation develops or persists.

Eye Contact:
Rinse cautiously with water for several minutes.
Remove contact lenses if present and easy to do, then continue rinsing.
Seek medical attention if irritation persists.

Ingestion:
Rinse mouth with water and seek medical attention if discomfort occurs.
Seek medical attention if a significant amount is swallowed.
Never give anything by mouth to an unconscious person.

Note to Physicians:
Treat symptomatically.
No specific antidote is required.
Provide supportive care as needed.

HANDLING AND STORAGE

Handling:
Use appropriate PPE including gloves and safety glasses for bulk handling.
Avoid splashing into eyes and prolonged skin contact.
Use clean transfer equipment and control spills because viscous liquids can create slip hazards.

Ventilation:
Use general ventilation for normal handling.
Use local exhaust if heating generates mists.
Avoid aerosol formation in enclosed spaces without adequate airflow.

Storage:
Store in tightly closed containers in a cool, dry place.
Protect from contamination, strong oxidizers, and excessive heat.
Maintain clean packaging integrity to preserve color and low acid value.

Spill and Leak Procedures:
Contain spill and absorb with inert material.
Clean residue promptly because plasticizer films can be slippery.
Dispose of waste according to local regulations and facility procedures.

Handling Precautions:
Optimize processing conditions because TOTM viscosity can affect mixing, extrusion, and plastisol behavior compared with lighter plasticizers.
Verify end-use compliance because approvals for medical or food-contact uses depend on grade and regulatory region.
Rotate stock using FIFO practices to maintain consistent quality and predictable plasticization performance.