Arachidic acid

Arachidic acid (CAS 506-30-9) is a saturated long-chain fatty acid derived from peanut oil and other vegetable sources, also known as arachic acid, peanut acid, or C20:0. It carries no assigned E-code and is catalogued under EC 208-031-3. The molecular formula is C20H40O2.

In personal care formulations, arachidic acid functions as an emulsifier and emulsion stabilizer by anchoring at oil-water interfaces to resist droplet coalescence. In metalworking and industrial lubricant systems, its long saturated carbon chain reduces friction between metal surfaces through boundary-layer film formation, improving tool life and surface finish.

Arachidic acid is supplied in powder and flake grades suitable for cosmetic, food-contact, and industrial applications. Procurement should confirm compliance with REACH registration requirements under HS code 29159000. Packaging is typically available in fiber drums or multi-wall bags; FCC and Ph.Eur. grade availability should be confirmed with the supplier at time of order.