dotP

DOTP stands for di(2-ethylhexyl) terephthalate, a plasticizer used to impart flexibility to polyvinyl chloride (PVC) and other polymers. It is a diester of terephthalic acid with the secondary alcohol 2-ethylhexanol and is commonly marketed as a non-phthalate substitute for traditional plasticizers based on phthalates.

Production involves esterification of terephthalic acid with 2-ethylhexanol, typically followed by purification to remove residual acids and alcohols. Its relatively high molecular weight and hydrophobic character give it low volatility and reduced migration compared with many phthalate plasticizers. It is compatible with PVC and helps maintain flexibility over a broad temperature range.

DOTP is generally considered to have a more favorable toxicological profile than many phthalates and is widely used as a phthalate substitute in consumer products, including items in contact with skin or food contact under certain regulations. However, like all plasticizers, it can migrate under certain conditions and its safety depends on exposure level and product formulation.

Regulatory and safety considerations: DOTP is commonly used to comply with restrictions on phthalates in toys and childcare articles; safety data sheets describe low acute toxicity but require handling precautions; environmental and lifecycle data vary by formulation. DOTP is one of several terephthalate-based plasticizers marketed as alternatives to phthalates.