Magnesium Phosphate
AKA “Phosphoric acid, magnesium salt, 10043-83-1, newberyte, RefChem:925189, trimagnesium orthophosphate, DTXSID20904278, 233-142-9, 680-895-8, 684-534-5”
Ingredient
Ingredient Facts
Magnesium phosphate
AKA: Phosphoric acid, Magnesium salt, 10043-83-1, Newberyte, RefChem:925189, Trimagnesium orthophosphate, DTXSID20904278, 233-142-9, 680-895-8, 684-534-5
Ingredient · Light Stabilizer · EWG: 4
Synthetic
Not Clean
Phosphoric acid, magnesium salt
Solubility INSOL IN COLD OR HOT WATER; INSOL IN LIQUID AMMONIA; SOL IN AMMONIUM SALT SOLN
Formula
Mg3O8P2
Mol. Weight
262.86
CAS #
10043-83-1
Form
Powder
State
NKRA
See origin →
Functions
Light Stabilizer
Shields from UV damage
Traditional Use
A mineral salt developed in the 19th-20th centuries for industrial and cosmetic use. Used as a buffering agent and anti-caking ingredient with no meaningful traditional cosmetic history.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Safety Assessment of Phosphoric Acid and Its Salts as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Magnesium Phosphate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Metaphosphoric Acid
European Commission
EU Cosmetic Ingredient Database (CosIng)
Phosphoric Acid
European Commission
EU Cosmetic Ingredient Database (CosIng)
Trimagnesium Phosphate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Phosphoric Acid
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR