Sodium Carbonate
AKA “Disodium carbonate, Soda Ash, Carbonic acid disodium salt, Sodium carbonate, anhydrous, Sodium carbonate anhydrous, Calcined soda, Solvay soda”
Synthetic
Ingredient Facts
Sodium carbonate
AKA: Disodium carbonate, Soda Ash, Carbonic acid disodium salt, Anhydrous, Sodium carbonate anhydrous, Calcined soda, Solvay soda
Synthetic · Cleansing · EWG: 4
Synthetic
Cleanser
Synthetic
Clean
A naturally derived mineral that helps balance pH and adds texture to beauty formulas, keeping products stable and easy to apply.
Solubility Freely soluble in water. Insoluble in ethanol
Formula
CNa2O3
Mol. Weight
105.99
CAS #
497-19-8
Form
Powder
State
Other Solid; Liquid, Other Solid; Dry Powder; Water or Solvent Wet Solid; Liquid; Pellets or Large Crystals; Dry Powder, Liquid; NKRA
See origin →
Functions
Buffering
Bulking
pH Adjuster
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Stabilizes pH
Adds Body & Volume
Wound Healing
Antioxidant Protection
Fights Bacteria
Maintains optimal pH
Adds volume
Traditional Use
An ancient mineral compound known as washing soda, used for centuries in laundry and cleaning. Historically derived from wood ash or mined from natural deposits; adopted into cosmetics for pH buffering and gentle cleansing applications.
Skin Types
●all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
Final Report on the Safety Assessment of Sodium Sesquicarbonate, Sodium Bicarbonate, and Sodium Carbonate
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Re-review Summary of Sodium Sesquicarbonate, Sodium Carbonate and Sodium Bicarbonate as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR