“What is DOTP?” is one of the most common raw material questions in PVC. This article explains what DOTP (dioctyl terephthalate) is, what it does in PVC, and how it is used in PVC plastisol and micro-injection soft PVC products.
What Is DOTP?
DOTP is short for dioctyl terephthalate. Its chemical name is bis(2-ethylhexyl) terephthalate, and it is also known as DEHT (CAS no. 6422-86-2). It is a colourless to pale yellow oily liquid, which is why it is also called a PVC softener.
What Does It Do in PVC?
DOTP is a plasticizer. Mixed with PVC, it softens the material and makes it flexible. Plasticizers like this are needed to turn rigid PVC into soft, bendable products. DOTP is considered a general-purpose plasticizer.
Is DOTP the Same as DOP?
No. The names look similar, but they are different substances. DOTP is a terephthalate and is phthalate-free. It is worth checking the name carefully when ordering and when reading technical documents.
Where Is DOTP Used?
- PVC plastisol and PVC paste
- Artificial leather and coated fabrics
- Flooring and PVC mats
- Cables and cable sheathing
- Hoses, profiles and PVC gloves
- Micro-injection labels, patches and footwear parts
The Role of DOTP in Plastisol
PVC plastisol is a fluid paste of fine PVC paste resin dispersed in plasticizer. It is poured into moulds or spread, and when heated it gels into a soft, flexible PVC part. The plastisol we use at ASLAB is made with DOTP or DOA and is phthalate-free. We use it to make soft PVC (rubber) labels, patches and footwear parts by micro-injection.
DOTP or DOA?
Both are phthalate-free plasticizers. DOTP is general-purpose, while DOA plasticizer stands out where flexibility in the cold matters. They can also be used together; the right blend depends on the product and its application.
Sourcing DOTP and Plastisol
We also quote for DOTP plasticizer and the PVC plastisol we use in our own production, supplied from Türkiye. Packaging and quantity are confirmed in the quotation. See all options on our raw materials page.
Conclusion
DOTP is a general-purpose, phthalate-free plasticizer that softens PVC and is used in many flexible PVC products, from plastisol to artificial leather. Tell us your approximate quantity and application through our quote form, and we will get back to you.