Bis(2,3-dihydroxypropyl) ether

Diglycerol (CAS 627-82-7, EC 211-013-8), also known as diglycerine or glycerinether, is a polyol formed by the condensation of two glycerol molecules. It carries no assigned E-code and is distinct from polyglycerol esters used as food emulsifiers. Its molecular formula is C6H14O5.

In personal care formulations, diglycerol functions as a humectant by binding water molecules within the skin matrix, reducing transepidermal moisture loss. In polymer processing, it acts as a plasticizer, reducing intermolecular forces between polymer chains to improve flexibility. Pharmaceutical manufacturers use it as a solvent and carrier for active ingredients in topical and oral preparations.

Diglycerol is supplied as a technical or cosmetic-grade colourless viscous liquid and falls under REACH registration requirements for European supply. Buyers should confirm grade suitability against FCC or Ph.Eur. standards depending on application. It is classified under HS code 2905.49.5001 for import and export purposes.