Diisobutyl Succinate

AKA: Butanedioic acid, Bis(2-methylpropyl) ester, Succinic acid, Diisobutyl ester, 1, 4-bis(2-methylpropyl) ester, AI3-05515, Di-(2-methylpropyl) ester
Synthetic
Not Clean
OriginDerived from succinic acid and isobutanol, both petroleum-based synthetic compounds or produced synthetically. Synthesized through esterification reaction between succinic acid and isobutyl alcohol using acid catalysts.
Diisobutyl Succinate is a cosmetic ingredient used as plasticiser. Also known as Butanedioic acid. Assessed as safe by the CIR.
Formula
C12H22O4
Mol. Weight
230.30
CAS #
925-06-4
Form
Liquid
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
Functions
Plasticiser
Antioxidant
Adds flexibility
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed0 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 2012
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR