Magnesium Hydrogen Phosphate

AKA: 7757-86-0, Magnesium phosphate dibasic, Phosphoric acid, Magnesium salt (1:1), Magnesium hydrogenorthophosphate, INS NO.343(II), INS-343(II), E-343(II)
Synthetic
Not Clean
Phosphoric acid, magnesium salt (1:1)
Formula
HMgO4P
Mol. Weight
120.28
CAS #
7757-86-0
Form
Powder
State
NKRA
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.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewed1 paper
⚖️Regulatory1 listing
🛡️Safety-assessed1 review
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR