1,8-octanediol

1,8-Octanediol (CAS 629-41-4), also known as 1,8-Dihydroxyoctane, is a straight-chain diol. Also marketed as ORISTAR OTD.

Where is 1,8-octanediol used?

• Personal care: emollient and antimicrobial co-preservative that extends preservation system efficacy in rinse-off and leave-on products
• Coatings and adhesives: chain extender or reactive diol modifying flexibility and adhesion
• Polyurethane and epoxy systems
• Sealants and elastomers: tunes crosslink density and improves substrate wetting in cured formulations
• Food-contact contexts: flavoring adjunct whose controlled hydrophilicity supports flavor delivery and dispersion in emulsified matrices
• Its bifunctional hydroxyl structure supports emulsification, surface wetting, and crosslinking in formulated systems.

Commercial specifications

• Packaging from kilogram-scale bags to drum quantities