murphyAluminum Distearate
AKA: Hydroxyaluminum distearate, 300-92-5, Aluminium distearate, Special M, Aluminum hydroxydistearate, Aluminum hydroxide distearate, HSDB 5487
Plant-Derived
Emulsifier
Clean
OriginDerived from stearic acid and aluminum salts, both produced through synthetic chemical processes. Synthesized through esterification of stearic acid with aluminum compounds to form the salt complex.
The CIR Expert Panel concluded that the following ingredients are safe in the present practices of use andconcentration described in the safety assessment when formulated to be non-irritating and non-sensitizing, which may be basedon a QRA...Aluminum Distearate...
Solubility Insoluble in water, alcohol, ether
Formula
C36H72AlO5
Mol. Weight
611.90
CAS #
300-92-5
Form
Wax
Skin Types
●all-skin-types, gentle
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-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
2
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Eye Irritant in Testing
1 study / 1 irritating / reactions minimal to mild (CIR 777)
Skin Irritant in Testing
1 study / 1 irritating / reactions minimal (CIR 245)
Concentration Guide
Leave-on0.004–5.5%
Rinse-off0.054–4%
0%50%100%
CIR reported use · 2016 survey
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR