Tetraethylene glycol diheptanoate

Tetraethylene glycol diheptanoate (CAS 70729-68-9), also referred to as TEGDH, is a synthetic diester built from tetraethylene glycol and heptanoic acid. It functions as a lubricant base fluid and plasticizer. This versatile chemical also serves as a moisturizing emollient across industrial and personal care applications. In lubricant formulations, TEGDH performs as a low-viscosity synthetic base fluid suited for precision oils.

It is ideal for specialty metalworking fluids where thermal stability and low volatility are required. Personal care formulators incorporate it into skin-conditioning products as an emollient that improves spreadability. The material enhances moisture retention without a heavy after-feel. As a plasticizer, it is evaluated in flexible polymer systems where a polar ester is needed to improve compatibility and softness in PVC substrates.

Its ester structure also makes it a candidate diluent or co-fluid in specialty lubricant blends requiring biodegradability credentials. Tetraethylene glycol diheptanoate is supplied as a clear liquid for various uses. It is available in technical and cosmetic grades, with cosmetic-grade material meeting purity requirements relevant to personal care formulation standards. This ensures high performance across diverse industrial sectors.

Packaging typically ranges from drum quantities to IBC for industrial buyers, with smaller quantities available for R&D. This flexibility supports both large-scale manufacturing and specialized formulation development.