Heptaethylene glycol

Heptaethylene glycol (CAS 5617-32-3, EC 227-040-3), also referred to as HO-PEG7-OH or PEG7, is a mid-chain polyethylene glycol with the molecular formula C14H30O8. It carries no E-code designation and is classified under HS code 2909498090 within the alcohols and glycols category.

In personal care formulations, PEG7 functions as a humectant by drawing moisture to the skin through its hygroscopic hydroxyl groups, while also serving as a solvent carrier for active ingredients. In textile and leather processing, it acts as a softener and plasticizer, reducing fiber stiffness by interrupting polymer chain interactions. Pharmaceutical applications use it as a dispersion aid in topical and semi-solid systems.

Heptaethylene glycol is available at 98% purity as an oil-form liquid. It falls under REACH regulation and suppliers should confirm compliance documentation accordingly. Standard packaging formats for B2B procurement typically include drums and intermediate bulk containers depending on order volume.