Dioctyl adipate

Dioctyl adipate

Dioctyl adipate (DOA) is an organic compound with the chemical formula C_22H_42O_4. It is a colorless, oily liquid that is most commonly used as a plasticizer for PVC and other polymers. DOA is known for its excellent low-temperature properties and is often used in applications where cold flexibility is required. It is also appreciated for its low volatility, which reduces the risk of migration and evaporation.

Properties

Dioctyl adipate is a diester of adipic acid and 2-ethylhexanol. It is soluble in oil but only slightly soluble in water. DOA has a low viscosity which makes it suitable for use in the production of plastics. Its boiling point is relatively high, and it has a mild odor.

Applications

The primary use of dioctyl adipate is as a plasticizer in the production of plastic films, especially for food packaging, due to its low toxicity. It is also used in the manufacture of leather cloths, as a hydraulic fluid, and as a solvent for cosmetics and pharmaceuticals. In the plastics industry, DOA is valued for its ability to impart flexibility at low temperatures, making it an ideal choice for products that require good cold resistance.

Health and Safety

While dioctyl adipate is considered to have low toxicity, it is still important to handle it with care. Exposure to DOA can cause irritation to the skin and eyes. Ingestion or inhalation of large amounts can lead to more serious health issues. Therefore, appropriate safety measures, such as wearing protective clothing and ensuring good ventilation, should be taken when handling this chemical.

Environmental Impact

The environmental impact of dioctyl adipate is a subject of ongoing research. As with many plasticizers, there is concern about its potential to leach out of plastics and into the environment. Studies are being conducted to understand the extent of this leaching and its effects on wildlife and ecosystems.

Regulation

The use of dioctyl adipate in consumer products is regulated by various international agencies to ensure safety. Regulations may vary by country, but they generally include limits on the amount of DOA that can be present in products that come into contact with food or are intended for children.