Dioctyl phthalate(DOP)

Dioctyl phthalate


Dioctyl Phthalate (DOP) is a plasticizer used in the production of flexible polyvinyl chloride (PVC) plastic. Dioctyl Phthalate is one of the most widely used plasticizers in PVC due to its low cost. DOP is a general-purpose plasticizer and long-time industry standard known for its good stability to heat and ultraviolet light, and broad range of compatibility for use with PVC resins. Dioctyl Phthalate can also be used as dielectric and hydraulic fluids. DOP is also a solvent for many chemicals, such as in glowsticks.

Di-n-octyl phthalate appears as a clear liquid with a mild odor. Slightly less dense than water and insoluble in water. Hence floats on water. Flash point 430°F. The primary hazard is the threat to the environment. Immediate steps should be taken to limit its spread to the environment. As a liquid, can easily penetrate the soil and contaminate groundwater and nearby streams. Eye contact may produce severe irritation and direct skin contact may produce mild irritation. Used in the manufacture of a variety of plastics and coating products.

Di-n-octyl phthalate is a colorless, odorless, oily liquid that doesn’t evaporate easily. It is a man-made substance used to keep plastics soft or more flexible. This type of plastic can be used for medical tubing and blood storage bags, wire and cables, carpet back coating, floor tile, and adhesives. It is also used in cosmetics and pesticides.

Applications of Dioctyl Phthalate

Dioctyl phthalate is a phthalate ester which is used in the manufacture of a wide range of plastics and coating products. It is used as a plasticizer in PVC paste and pulp mixtures and as an additive in many other processes.

It can be found in many end products including PVC soles for shoes and slippers, synthetic leather, waterproof membranes, paints, varnishes, floor coverings, door mats and hoses.

It is also used in the calendaring process of paper finishing, to produce PVC granules, as a hydraulic or dielectric fluid in capacitors, in toxicology studies and in risk assessment studies on food contamination which occurs via migration of phthalates into foodstuffs from food-contact materials (FCM).

Storage and Handling

Dioctyl phthalate should be stored in tightly-closed containers in a cool, dry, well-ventilated place.

This material should be handled in accordance with good industry safety and hygiene practices. Relevant engineering controls should be implemented. The product may cause skin irritation if contact is repeated or prolonged, as well as severe eye irritation. Risks from inhalation of vapor are minimal at room temperature but may cause irritation at higher temperatures. Personal protective equipment including approved safety glasses, impervious clothing and gloves must be worn, and respirators should be worn where deemed necessary by risk assessments for the task being carried out.