Magnesium Ascorbyl Phosphate

Magnesium Ascorbyl Phosphate 1
molecular structure · PubChem CID 71587428
AKA: Phospitan C, 113170-55-1, Ascorbyl PM, ORISTAR MAP, Ascorbyl phosphate magnesium
Plant-Derived Synthetic
Vitamin
Clean
OriginDerived from ascorbic acid (vitamin C) and magnesium salts, combined with phosphoric acid derivatives. Synthesized through esterification and phosphorylation of ascorbic acid with magnesium compounds.
See also: Hyaluronate sodium; magnesium ascorbyl phosphate (component of).
Formula
C12H12Mg3O18P2
Mol. Weight
579.08
CAS #
114040-31-2, 113170-55-1
Form
Powder
Skin Types
●all-skin-types
Functions
Buffering
Antioxidant Protection
Neutralizes Free Radicals
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
1
CIR
Insufficient
Pregnancy
—
CIR Safety Findings
Not a Skin Irritant
1 study / 1 not irritating (CIR 933)
Not a Sensitizer
3 studies / 3 not sensitizing (CIR 933)
Mixed Eye Irritation Results
3 studies / 2 irritating / 1 mixed (CIR 933)
Dermal Absorption 0.09–0.51%
dermatomed human cadaver skin / in vitro flow-through diffusion cells (exposed area 0.64 cm2) / 3% VC-PMG cream (Magnesium Ascorbyl Phosphate) / approx. 10 mg applied (CIR 278)
Concentration Guide
Leave-on0.00001–3%
Rinse-off0.00001–0.5%
0%50%100%
CIR reported use · 2023 survey
Regulatory Status
USAunder review
CANADA✔ permitted
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR