11-Eicosenoic acid

11-Eicosenoic acid, also known as gondoic acid or 20:1, is a monounsaturated long-chain fatty acid with CAS number 5561-99-9. It occurs naturally in fish oils, rapeseed oil, and certain plant seed oils. No E-code is assigned, and it is not listed under a standard abbreviation in food additive registers.

In personal care formulations, gondoic acid functions as an emollient and humectant by integrating into the lipid barrier and reducing transepidermal water loss. In lubricant and metalworking applications, its long carbon chain provides a stable boundary film that reduces friction between metal surfaces. It also serves as an emulsifier intermediate in food-grade fat processing.

Gondoic acid is supplied as a solid and is available in technical and research grades. It falls under REACH registration requirements for suppliers placing it on the EU market. Procurement teams should confirm grade specifications and lot documentation directly with the supplier for compliance purposes.