murphyAluminum Stearate
AKA: Aluminum stearate 300, Dibasic aluminium stearate, Aluminium, Dihydroxide stearate, ALUMINUM MONOPALMITOSTEARATE, (octadecanoyloxy)alumanylidene dihydrate
Plant-Derived
Colorant
Emulsifier
Clean
OriginTypically derived from coconut, palm kernel, or soybean oils as the natural starting material. Produced through esterification of stearic acid with aluminum salts via chemical synthesis.
Aluminium monostearate is a salt of stearic acid and aluminium with the molecular formula Al(OH)2C18H35O2. Also known as dihydroxyaluminium or dihydroxy(stearato)aluminium, it is used to form gels in the packaging of pharmaceuticals and in the preparation of colors for cosmetics. While considered safe for use, extensive usage may result in aluminum accumulation.
Formula
C18H37AlO4
Mol. Weight
344.50
CAS #
7047-84-9
Form
Wax
Skin Types
●all-skin-types, gentle
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Anticaking
Colorant
Gives the product its color. Purely aesthetic — makes the formula look good in the jar but does nothing for your skin.
Emulsion Stabilising
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Viscosity Controlling
Prevents Clumping
Adds Color
Stabilizes Emulsion
Controls Viscosity
Keeps Formula Blended
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
1
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
Leave-on0.0099–3.1%
Rinse-off0.00014–3.4%
0%50%100%
Reg. limit 14%
CIR reported use · 2016 survey
SCCS maximum safe concentration: 14%. Product type: cosmetic products. Source: SCCS Opinion SCCS/1626/20.
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR