Calcium Stearate
AKA “1592-23-0, Calcium octadecanoate, Octadecanoic acid, calcium salt, Calcium distearate, Calstar, Flexichem, Aquacal, Flexichem CS, Stavinor 30”
Synthetic
Ingredient Facts
Calcium stearate
AKA: 1592-23-0, Calcium octadecanoate, Octadecanoic acid, Calcium salt, Calcium distearate, Calstar, Flexichem, Aquacal, Flexichem CS, Stavinor 30
Synthetic · Emulsifying · EWG: 1
Synthetic
Emulsifier
Skin Conditioner
Synthetic
Clean
Aluminium monostearate is a salt of stearic acid and aluminium. It is used to form gels in the packaging of pharmaceuticals, and in the preparation of colors for cosmetics. Aluminum is the most abundant metal in the earth's crust and is always found combined with other elements such as oxygen, silicon, and fluorine. (L739, L740, L763)
Solubility 0.004 G/100 CC H2O AT 15 °C; INSOL IN ALCOHOL & ETHER
Formula
C36H70CaO4
Mol. Weight
607.00
CAS #
1592-23-0
Form
Liquid
State
Pellets or Large Crystals, Liquid, Other Solid; Pellets or Large Crystals; Pellets or Large Crystals, Liquid; Dry Powder, Pellets or Large Crystals; Water or Solvent Wet Solid; Dry Powder; Liquid; Dry
See origin →
Functions
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Prevents Clumping
Adds Color
Stabilizes Emulsion
Controls Viscosity
Keeps Formula Blended
Skin Types
●all-skin-types
Take the Skin ID quiz to see if this matches your skinEWG
1
CIR
—
Pregnancy
—
CIR Safety Findings
Not a Sensitizer
all-shades-safe
Regulatory Agencies
Final Report of the Safety Assessment of Lithium Stearate, Aluminum Distearate, Aluminum Stearate, Aluminum Tristearate, Ammonium Stearate, Calcium Stearate, Magnesium Stearate, Potassium Stearate, So
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Calcium Stearate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Verified Jun 2026
Data: PubChem · CosIng · EWG