Propylene Glycol Diisononanoate

AKA: 125804-17-3, 7-methyloctanoic acid;propane-1, 2-diol, 7-Methyloctanoic acid--propane-1, 2-diol (2/1)
Synthetic
Emollient
Skin Conditioner
Not Clean
OriginSynthesized from propylene glycol and isononanoic acid, both petroleum-derived or bio-based chemical compounds. Produced through esterification reaction between propylene glycol and isononanoic acid under catalytic conditions.
Isononanoic acid, 1-methyl-1,2-ethanediyl ester
Formula
C21H44O6
Mol. Weight
392.60
CAS #
125804-17-3
Form
Powder
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
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
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2014
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR