DOTP Plasticizer in PVC Wire and Cable: Complete Application Guide
DOTP delivers superior heat resistance, electrical insulation, and eco-friendly compliance for PVC wire and cable. Learn why cable makers choose DOTP over phthalates.
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230,000 t Annual plasticizer capacity (at full build-out)
Since 2004 Manufacturing
4-system IMS Quality / environment / safety / energy
Every batch Tested, sampled and traceable
Specifications
COA ships with every batch; regulatory items are issued by SGS as a third party.
CAS No 6422-86-2 HS Code 2917399090 Molecular formula C₂₄H₃₈O₄ Molecular weight 390.56
Product description
Superior DOTP (Dioctyl Terephthalate) is a premium-grade, non-phthalate plasticizer specifically engineered for high-performance PVC applications. With its exceptional electrical insulation properties (volume resistance ≥2×10¹² Ω·cm) and outstanding low-temperature flexibility, it is the preferred choice for PVC wire and cable insulation, medical gloves, and food-contact applications. Unlike traditional DOP, DOTP offers superior thermal stability, lower volatility, and excellent resistance to migration, making it an environmentally friendly alternative that meets stringent international regulations including REACH and RoHS. Our Superior DOTP achieves ≥98% purity with flash point ≥210°C, ensuring consistent processing performance and long-term product durability.
| Appearance | Transparent liquid |
|---|---|
| Density (g/cm³) | 0.980-0.985 |
| Content (%) | ≥98 |
| Color (APHA) | ≤150 |
| Acidity (as terephthalic acid) (%) | ≤0.035 |
| Volume Resistance (Ω·cm) | ≥2×10¹² |
| Flash point (°C) | ≥210 |
| Water Content (%) | ≤0.1 |
Compare with other grades in the series
| Grade | Colour (APHA) | What differs |
|---|---|---|
| Superior | ≤150 | Tightest colour tolerance |
| First-Grade | ≤230 | Same performance, wider colour tolerance |
| Qualified | ≤450 | Widest colour tolerance |
Key features
- Excellent electrical insulation properties
- Low volatility and good thermal stability
- Good resistance to heat and light
- Environmentally friendly, non-toxic
- Good plasticizing efficiency
Where it is used
One batch, one specification — pick your downstream process for grade advice.
Film & Sheet
Film and sheet need clarity, flexibility and weather resistance, and the plasticizer has to stay in the film so the sheet keeps its dimensions. Film thickness and the end use fix which grade fits, and both are agreed before the first drum is packed.
Synthetic Leather
Coated fabric for furniture upholstery and automotive interiors needs a soft hand feel plus resistance to abrasion and flex fatigue. The plasticizer has to stay in the coating instead of migrating into the backcloth, so the hand feel holds over time.
Footwear Materials
Soles and upper materials need abrasion resistance and flex crack resistance, and thin parts lose softness fastest once plasticizer migrates. Target hardness and the buyer's flex test set the grade, and the sample is moulded to both.
Medical Gloves
Glove film has to stay pinhole-free at low thickness, so the plastisol needs a plasticizer with low volatility and a viscosity that holds through the dip. Consistent viscosity across batches is what holds the film thickness inside tolerance.
Household Gloves
Household gloves are dipped from PVC plastisol, and the plasticizer sets both the hand feel and how much softener comes to the surface. We match the grade to the target hand feel and to the filler loading on the line.
Recommended for PVC Wire & Cable Compounds
Building wire and power cable insulation is the volume use: the Superior specification keeps volume resistance high after accelerated aging so signal-pair capacitance stays in tolerance for communication and low-voltage cable. When converting a line from DEHP or DINP, start from the current loading and add 2-5 phr to compensate for DOTP's slightly lower plasticizing efficiency, then confirm tensile strength, elongation, hot-set and insulation resistance in a lab trial before switching production.
Building Wire & Power Cable Insulation
Building and power cable insulation is the volume use for DOTP. Volume resistance ≥2×10¹² Ω·cm and low volatility keep dielectric loss stable across the service temperature window, and the non-phthalate terephthalate chemistry satisfies cable compounds shipped into REACH-restricted markets. Typical insulation loading runs 45-60 phr, with sheath compounds at 50-65 phr.
Read the wire & cable guide Communication & Low-Voltage Cable
For communication and low-voltage cable, the same Superior DOTP keeps insulation resistance high after accelerated aging, so signal-pair capacitance stays in tolerance. Flame-retardant packages built on the terephthalate chemistry are evaluated against IEC 60332 and UL 94 for building-wire and riser grades.
Read the wire & cable guidePackaging
Five container types; net weight and 20GP loading for each.
Flexibag Net weight: 23 t 1 Flexibag/20 GP Container
ISO Tank Net weight: 23 t 1 ISO TANK/20 GP Container
IBC Barrel Net weight: 20 t 20 IBC Barrels/20GP Container
Plastic Barrel Net weight: 16 t 80 Plastic Barrels/20GP Container
Galvanized Iron Drum Net weight: 16 t 80 Iron Barrels/ 20GP Container
Shipping & terms
Non-hazardous chemical, standard chemical logistics.
Full container (FCL)
- 20GP: flexibag, ISO tank or drums
- 40HQ: palletised drums
- Loading per the packaging table
Bulk and ISO tank
- Flexibag up to 23 t per 20GP
- ISO tanks can be returned; suited to long-term contracts
- Confirm discharge facilities at the destination port
Trade terms
- FOB Qingdao
- FOB Shanghai
- CIF main ports
- T/T
- L/C
Storage & handling
- Storage: Store in a cool, dry and well-ventilated area. Keep container tightly closed when not in use.
- Transport: Transported as non-hazardous chemical. Protect from sunlight and rain during transportation.
Our factory
Changxing and Wansheng sites in Shandong; continuous esterification and distillation lines.
Laboratory & inspection
Every batch tested against the full specification before shipment.
Factory test items
- Appearance and colour (APHA)
- Ester content (gas chromatography)
- Acidity titration
- Water content (Karl Fischer)
- Density
- Flash point
- Volume resistivity
- Third-party regulatory items (SGS)
Quality documents
Documents buyers and compliance teams ask for; request any of them.
TDS Specification and test methods 
Batch COA Issued for every batch 
MSDS Transport and storage 
REACH statement Non-phthalate compliance 
ISO certificates 9001 / 14001 / 45001 / 50001 
SGS test reports Phthalates 17P / EN71-3 / PFAS screening Additional documents
Other grades in the same series
Same chemistry, different colour tolerance — choose by the colour your end product needs.
Related Cable Guides
FAQ — DOTP for PVC Wire & Cable
Is Superior DOTP for Wire & Cable a different grade from Superior DOTP?
No. It is the same product — the same batches, the same specification (CAS 6422-86-2). This page recommends our Superior DOTP for PVC wire and cable compounds and gathers the electrical data cable makers ask for. There is no separate formulation, and no separate TDS or COA.
Why do cable compounders choose DOTP over DEHP?
DOTP is a terephthalate ester, not an ortho-phthalate. It is not restricted under EU REACH Annex XVII entry 51, is not classified as a CMR substance, and is not listed under California Proposition 65. Volume resistance ≥2×10¹² Ω·cm keeps dielectric performance stable for building wire, power cable and communication cable.
How much DOTP does a cable compound use?
Insulation compounds typically run 45-60 phr and sheath compounds 50-65 phr, depending on the target flexibility and the filler loading. When converting from DEHP or DINP, start at your current loading and confirm tensile strength, elongation, hot-set and insulation resistance in a lab trial before full production.
What compliance documents are available?
The same document set as our Superior DOTP: COA, MSDS, REACH and RoHS statements, SGS reports covering 17 phthalates, plus a carbon footprint report. Downloads are listed on the Superior DOTP product page.
What is the minimum order and how is it packed?
Production volumes ship from one 20ft container: 16 MT in plastic or iron drums, 20 MT in IBC tanks, 23 MT in flexibag or ISO tank. For trials, 200L drums and 1000L IBC totes are available. Every batch ships with full traceability documentation.
Request a Cable-Compound Quote
Tell us your cable type and target insulation properties — we reply with pricing, loading guidance and the full document set.