Isobutyl Pelargonate
AKA “Isobutyl nonanoate, UNII-8J1S30GF9R, EINECS 250-411-6, AI3-33733, AEC ISOBUTYL PELARGONATE, NONANOIC ACID, 2-METHYPROPYL ESTER”
Synthetic
Ingredient Facts
Isobutyl pelargonate
AKA: Isobutyl nonanoate, UNII-8J1S30GF9R, EINECS 250-411-6, AI3-33733, AEC ISOBUTYL PELARGONATE, NONANOIC ACID, 2-METHYPROPYL ESTER
Synthetic · Emollient · EWG: 4
Synthetic
Emollient
Skin Conditioner
Synthetic
Clean
A lightweight emollient that softens and conditions skin, leaving it smooth and supple without a heavy feel.
Formula
C13H26O2
Mol. Weight
214.34
CAS #
30982-03-7
Form
Liquid
See origin →
Functions
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Locks In Moisture
Traditional Use
Synthetic ester created as a cosmetic ingredient in the mid-20th century. Formulated to provide emollient and skin-conditioning benefits in cosmetic products with improved stability compared to natural alternatives.
Skin Types
●all-skin-types
Best For
Dryness
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
Final report of the Cosmetic Ingredient Review Expert Panel on the safety assessment of Pelargonic Acid (nonanoic acid) and nonanoate esters
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Isobutyl Pelargonate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Final report of the Cosmetic Ingredient Review Expert Panel on the safety assessment of pelargonic acid (nonanoic acid) and nonanoate esters.
Johnson W Jr, Heldreth B, Bergfeld WF, Belsito DV, Klaassen CD et al.
International journal of toxicology, 2011
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR