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Magnesium Hydrogen Phosphate
AKA “7757-86-0, Magnesium phosphate dibasic, Phosphoric acid, magnesium salt (1:1), Magnesium hydrogenorthophosphate, A1Y870209Z, INS NO.343(II), INS-343(II), DTXSID00872522, E-343(II)”
Ingredient
Ingredient Facts
Magnesium hydrogen phosphate
AKA: 7757-86-0, Magnesium phosphate dibasic, Phosphoric acid, Magnesium salt (1:1), Magnesium hydrogenorthophosphate, A1Y870209Z, INS NO.343(II), INS-343(II), DTXSID00872522, E-343(II)
Ingredient · Anticaking · EWG: 4
Synthetic
Not Clean
Phosphoric acid, magnesium salt (1:1)
Formula
HMgO4P
Mol. Weight
120.28
CAS #
7757-86-0
Form
Powder
State
NKRA
See origin →
Functions
Anticaking
Anti-Inflammatory
Fights Acne
Antioxidant
Prevents clumping
Traditional Use
A modern mineral compound developed in the 20th century for use as a buffering agent and anti-caking ingredient in cosmetics and pharmaceuticals. No significant traditional use exists for this synthetic salt.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR