Aluminum Isostearate

AKA: 72277-75-9, Isooctadecanoic acid, Aluminum salt, Aluminum isostearate [INCI], Isostearic acid, Aluminum;16-methylheptadecanoate
Plant-Derived
Emulsifier
Not Clean
OriginDerived from isostearic acid, a synthetic fatty acid typically produced from hydrogenated vegetable oils. Synthesized through esterification of isostearic acid with aluminum salts to create the aluminum salt compound.
Isostearic acid, aluminum salt
Formula
C54H105AlO6
Mol. Weight
877.40
CAS #
72277-75-9
Form
Wax
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Anticaking
Emulsion Stabilising
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Opacifying
Viscosity Controlling
Prevents Clumping
Stabilizes Emulsion
Adds Opacity
Controls Viscosity
Keeps product blended
Creates creamy opacity
Controls product thickness
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
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 2019
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR