INCI Name
Magnesium Ascorbyl P...
Functions
3 Roles
Sustainability
7/10
Category
actives
What It Does
Magnesium Ascorbyl Phosphate is a stable, water-soluble derivative of vitamin C created by combining ascorbic acid with phosphate and magnesium salt. Unlike pure L-ascorbic acid which degrades rapidly and requires very low pH, MAP remains stable at near-neutral pH (6-7) and converts to active vitamin C once absorbed into skin through enzymatic action. Formulators choose this derivative specifically for its exceptional stability in water-based formulations, its gentleness on sensitive skin, and its ability to brighten skin tone while providing antioxidant protection without the irritation associated with direct ascorbic acid.
Technical Properties
pH Range
6.0-7.5
Optimal working range
Ionic Charge
anionic
Molecular charge type
Viscosity Effect
neutral
Impact on formula thickness
Molecular Profile
Molecular Weight
579.08
g/mol
H-Bond Donors
4
Hydrogen bond donor count
H-Bond Acceptors
18
Hydrogen bond acceptor count
Polar Surface Area
324.0
Angstroms squared
Ingredient Compatibility
Known Interactions
Calcium and Magnesium compete for absorption at high doses. While they can be combined at moderate levels, high-dose formulations should separate them or use chelated forms.
Sustainability Profile
Sustainability Score
Biodegradability
readily biodegradable
Source
synthetic
Feedstock
ascorbic acid (vitamin C) with phosphate and magnesium salt modification
Related Ingredients
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Quick Reference
- Full INCI Name
- Magnesium Ascorbyl Phosphate
- Common Name
- Magnesium Ascorbyl Phosphate
- CAS Number
- 114040-31-2---113170-55-1
- Category
- actives