Hentriacontanoic acid

Hentriacontanoic acid (CAS 38232-01-8) is a saturated, straight-chain fatty acid with a 31-carbon backbone. It carries no assigned E-code and is not listed in standard food additive registers. It is also referenced in supplier catalogues as hentrlacontanoic acid, reflecting a common transliteration variant.

In personal care and cosmetic formulations, hentriacontanoic acid functions as a structuring emulsifier, stabilising water-in-oil interfaces through its long hydrophobic chain. In lubricant and metalworking applications, the acid reduces friction at metal surfaces by forming a boundary film under load. Food and nutrition research applications use it as a reference standard for odd-chain fatty acid analysis.

This material is supplied as a fine powder at purity levels of 99% or above. Procurement should confirm REACH registration status with the supplier prior to import into the EU. Regulatory alignment with FCC or Ph.Eur. monographs has not been established for this acid; buyers should request a full specification sheet and certificate of analysis.