This guide covers part of our wider range beyond polyurethane. Plasticizers do one essential job: they sit between polymer chains and let them slide, turning rigid PVC into something flexible. The four we supply — DOP, DINP, DOTP and DPHP — are not interchangeable, and choosing well means matching the molecule to how the product is made and used.
DOP — the benchmark
Dioctyl phthalate is the general-purpose standard: the best balance of cost and performance, easy to mix with PVC, with stable electrical properties. The default for cables, footwear, hoses and general film.
DINP — when permanence matters
Diisononyl phthalate is heavier and more durable — less volatile, better at aging and weathering — so it suits automotive interiors, flooring, coated fabrics and outdoor PVC.
DOTP — the non-phthalate route
Dioctyl terephthalate is the choice where regulation or perception rules phthalates out, bringing low migration and excellent thermal stability for sensitive and non-phthalate-required products.
DPHP — for heat and longevity
Di(2-propylheptyl) phthalate is the premium performer for high-temperature processing and long-life products such as industrial cables and roofing membranes.
A simple framework
Phthalates not acceptable? DOTP. Heat or long life needed? DPHP. Durability at moderate cost? DINP. Otherwise DOP gives the most performance per rupee. See our plasticizer range.
Creston Chem supplies polyols, TDI, MDI and polyurethane additives to manufacturers across India. For grade-specific guidance, talk to our desk.