1,5-Pentanediol

1,5-Pentanediol (CAS 111-29-5) is a straight-chain diol also known as pentylene glycol, 1,5-pentandiol, and alpha,omega-pentanediol. It carries no assigned E-code. The compound belongs to the alcohols and glycols family and is commercially available under several synonyms including omega-pentanediol.

In personal care formulations, 1,5-pentanediol functions as a solvent and humectant, solubilising active ingredients while moderating water activity on the skin surface. In polymer manufacturing, its two terminal hydroxyl groups react with diisocyanates or diacids to form polyurethane or polyester chains, controlling crosslink density and final material flexibility. Food-grade material is also used as a flavour carrier and heat stabiliser in processed applications.

The material is supplied in technical and cosmetic grades, with food-grade material conforming to FCC specifications where required. It falls under REACH regulation (EC 1907/2006) and is classified under HS code 29053980 for EU customs purposes. Packaging typically includes IBC containers and drums for bulk procurement.