Propylene Glycol Diisononanoate
AKA “RefChem:869798, 125804-17-3, 7-methyloctanoic acid;propane-1, 2-diol, 7-Methyloctanoic acid--propane-1, 2-diol (2/1), SCHEMBL933221, DTXSID10721431
Emollient
Ingredient Facts
Propylene glycol diisononanoate
AKA: RefChem:869798, 125804-17-3, 7-methyloctanoic acid;propane-1, 2-diol, 7-Methyloctanoic acid--propane-1, 2-diol (2/1), SCHEMBL933221, DTXSID10721431
Emollient · Emollient · EWG: 4
Synthetic
Emollient
Skin Conditioner
Not Clean
Isononanoic acid, 1-methyl-1,2-ethanediyl ester
Effective at 1.0%
Formula
C21H44O6
Mol. Weight
392.60
CAS #
125804-17-3
Form
Powder
See origin →
Functions
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Viscosity Controlling
Locks In Moisture
Traditional Use
Synthesized in the late 20th century as a synthetic branched-chain ester. Created for use in modern cosmetics as a lightweight emollient and texture enhancer, designed to improve spreadability and skin feel.
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
Concentration Guide
9.9e-05%
2.0%
0%14%
Effective Range
CIR reported use: 0.000099-2
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR