Views: 1 Author: DOBO New Energy Publish Time: 2026-08-20 Origin: Site
TOTM (trioctyl trimellitate) may be worth considering when a PVC compound specification points to lower volatility, higher temperature resistance or better electrical insulation than a traditional plasticizer can deliver. Because every formulation is different, the comparison in this article is limited to the TDS values of this TOTM grade, and any substitution should be verified by formulation testing.
Traditional PVC plasticizers such as the phthalate and adipate families are well known in flexible PVC compounding. TOTM differs in structure: it is a trimellitate ester with a higher molecular weight. In practice, the differences that formulators may consider first are the ones visible on the TDS, such as flash point, volume resistivity and ester content.
This article intentionally focuses on the TOTM technical data. For a direct comparison against a specific plasticizer grade, request both TDS documents and review them side by side with your technical team.
Parameter | Value |
|---|---|
Ester Content (%) | ≥ 99.5 |
Color (Pt-Co) | ≤ 50 |
Specific Gravity (20°C/20°C) | 0.984 - 0.991 |
Acid Value (mg KOH/g) | ≤ 0.1 |
Water Content (%) | ≤ 0.1 |
Volume Resistivity (Ω·cm) | ≥ 10x10^10 |
Flash Point (°C) | ≥ 240 |
These are the typical values listed for this TOTM grade. Actual batch values should be verified against the documentation provided by the supplier before use.
Heat resistance - a flash point of ≥ 240 °C may support evaluation for compounds exposed to elevated temperatures, such as heat-resistant cable compounds. See the High Heat-Resistant Plasticizer TOTM for PVC Cables product page.
Low volatility - lower volatility can be relevant for automotive interior parts and long-service-life products. See the Low Volatility Trioctyl Trimellitate for Automotive Interiors product page.
Electrical insulation - the volume resistivity of ≥ 10x10^10 Ω·cm may be useful when electrical properties are part of the specification. See the High Volume Resistivity TOTM for Electrical Insulation Materials product page.
Extraction and migration resistance - these can be relevant in flooring, mats and other products in contact with cleaning agents. See the Fast Gelation TOTM Plasticizer for PVC Floorings and Mats product page.
Traditional plasticizers remain widely used for many standard flexible PVC applications. Cost, availability, processing behavior and established formulations are all factors that can keep a traditional plasticizer in the recipe. The decision should be based on the full specification, not on a single TDS value.
Switching plasticizers is not a drop-in change in every compound. Consider these steps before making a decision:
Compare the TDS of both grades side by side.
Run a small-scale compounding trial with your own recipe.
Test the finished properties against your specification.
Request the current batch TDS and sample from the supplier.
DOBO New Energy can provide TOTM samples and the current batch TDS so your technical team can verify the formulation before any commitment.
TOTM may be considered as a replacement in certain applications, but the formulation should be verified first, because the TDS values and processing behavior differ between plasticizer families.
Ester content ≥ 99.5, color ≤ 50 Pt-Co, specific gravity 0.984-0.991, acid value ≤ 0.1 mg KOH/g, water content ≤ 0.1, volume resistivity ≥ 10x10^10 Ω·cm and flash point ≥ 240 °C.
A flash point of ≥ 240 °C and a high volume resistivity may make TOTM worth evaluating for heat-resistant cable compounds, but the final suitability depends on the whole compound and the applicable cable standard.
TOTM is a high-molecular-weight trimellitate ester. Higher molecular weight is generally associated with lower volatility, which is one reason the flash point is listed at ≥ 240 °C.
Likely yes. Dosage, processing temperature and stabilizer packages can all be affected, so the formulation should be verified with trials before production.
Contact DOBO New Energy with your application details to request a sample and the current batch TDS.
TOTM can be considered when the specification points toward lower volatility, higher temperature resistance or better electrical insulation. The 7 TDS parameters in this article are the reference points, and the final decision should always be confirmed by your technical team with formulation testing.
If you would like to evaluate TOTM, contact DOBO New Energy to request a sample and the current batch TDS.
