Butyloctyl Oleate
AKA “2-Butyloctyl oleate, 134112-37-1, 2830Y2FNR6, (Z)-9-octadecenoic acid, 2-butyloctyl ester, 9-Octadecenoic acid (Z)-, 9-Octadecenoic acid (9Z)-, RefChem:571864, BUTYLOCTYL OLEATE [INCI], (+/-)-2-Butyloctyl oleate
Emollient
Ingredient Facts
Butyloctyl oleate
AKA: 2-Butyloctyl oleate, 134112-37-1, 2830Y2FNR6, (Z)-9-octadecenoic acid, 2-butyloctyl ester, 9-Octadecenoic acid (Z)-, 9-Octadecenoic acid (9Z)-, RefChem:571864, BUTYLOCTYL OLEATE [INCI], (+/-)-2-Butyloctyl oleate
Emollient · Emollient · EWG: 4
Synthetic
Emollient
Skin Conditioner
Not Clean
(Z)-9-Octadecenoic acid, 2-butyloctyl ester
Formula
C30H58O2
Mol. Weight
450.80
CAS #
134112-37-1
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 derived from oleic acid (found in olive oil and other plant oils). Created to provide the conditioning benefits of traditional plant-based oils in a more stable, modern formulation.
Skin Types
all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR