Ammonium Stearate
AKA “Octadecanoic acid, ammonium salt, RefChem:112206, DTXCID007353, Stearic acid, Ammonium octadecanoate”
Synthetic
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Ingredient Facts
Ammonium stearate
AKA: Octadecanoic acid, Ammonium salt, RefChem:112206, DTXCID007353, Stearic acid, Ammonium octadecanoate
Synthetic · Cleansing | Surfactant - Cleansing | Surfactant - Emulsifying · EWG: 1
Synthetic
Cleanser
Emulsifier
Plant Oil
Synthetic
Clean
A gentle cleanser that helps remove dirt and oil while keeping your product's texture smooth and creamy. Derived from natural sources.
Formula
C18H39NO2
Mol. Weight
301.50
CAS #
1002-89-7
Form
Powder
State
Ammonium stearate appears as white to yellow paste or liquid with a weak ammonia odor. May float or sink in water. (USCG, 1999)
Synthetic
Botanical. Typically derived from coconut, palm kernel, or soybean oils as the natural starting material. Produced through ammoniation of stearic acid, a fatty acid extracted from these plant oils.
Function
Cleansing | Surfactant - Cleansing | Surfactant - Emulsifying
Benefits
Removes Impurities
Cleansing Surfactant
Emulsifier
Reduces Inflammation
Locks In Moisture
Mixes Oil & Water
Traditional Use
A synthetic salt derived from stearic acid. Developed in the 20th century as an emulsifying and thickening agent in cosmetics with no meaningful traditional use.
Skin Types
all-skin-types, gentle
Best For
Target
General
Melanin-Rich Skin
Suitable
Pregnancy Safe
Yes
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR