Tetraethylene glycol

Tetraethylene glycol (CAS 112-60-7) is a polyether glycol also known as PEG-4, tetraglycol, and Hi-Dry. It carries no E-code designation and is classified under HS code 29094919. The compound belongs to the polyethylene glycol family, distinguished by its four ethylene oxide repeat units.

In polymer manufacturing, tetraethylene glycol functions as a crosslinker by forming covalent bridges between polymer chains, increasing network density and mechanical strength. In personal care and pharmaceutical formulations, it acts as a humectant and solvent carrier, drawing moisture to the skin surface while solubilising active ingredients. Its antimicrobial properties also support preservation applications in select formulations.

Tetraethylene glycol is supplied as a technical or high-purity liquid grade, with quality standards aligned to REACH compliance for European distribution. Procurement teams should confirm grade suitability against Ph.Eur. or FCC specifications depending on end-use requirements. Standard packaging includes drums and intermediate bulk containers.