2-Butene-1,4-diol

2-Butene-1,4-diol (CAS 110-64-5, EC 203-787-0) is a short-chain unsaturated diol also referred to as 1,4-dihydroxybutene, 1,4-but-2-enediol, and 2-buten-1,4-diol. It carries no assigned E-code and is supplied as an oily liquid under standard conditions.

In personal care formulations, it functions as a humectant by attracting and retaining moisture at the skin surface, and as a skin conditioner in leave-on and rinse-off products. In food and flavour applications, it serves as a fragrance and flavorant intermediate, contributing to specific aroma profiles in finished compositions.

2-Butene-1,4-diol is available in technical and high-purity grades and is subject to REACH registration requirements for EU import and manufacture. Procurement teams should confirm FCC compliance when sourcing for food-contact or flavour applications. Standard packaging formats include drums and intermediate bulk containers.