murphyMagnesium Carbonate
AKA: 546-93-0, Magnesite, Magnesium carbonate anhydrous, Kimboshi, Magmaster, Apolda, Carbonic acid, Magnesium salt (1:1), Destab, Magfy
Synthetic
Colorant
Clean
OriginMagnesium carbonate is synthesized from magnesium salts and carbonate sources, commonly derived from magnesite ore or seawater minerals. It is produced through precipitation reactions where magnesium chloride or magnesium sulfate reacts with sodium carbonate or carbon dioxide.
Magnesium carbonate (CI 77713)
Solubility 0.01 % (NIOSH, 2024)
Formula
CMgO3
Mol. Weight
84.31
CAS #
546-93-0, 7757-69-9
Form
Powder
State
Magnesite appears as white, yellowish, grayish-white or brown crystalline solid or crystalline powder. Density: 3-3.1 g cm-3. An important ore for magnesium. Used in the manufacture of materials capab
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Absorbent
Binding
Bulking
Colorant
Gives the product its color. Purely aesthetic — makes the formula look good in the jar but does nothing for your skin.
Opacifying
Moisturizing
Brightening
Fights Acne
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
Safe as used
Pregnancy
Yes
CIR Safety Findings
Mixed Eye Irritation Results
3 studies / 1 irritating / 1 mixed / 1 not irritating / reactions minimal to moderate (CIR 722)
Concentration Guide
Leave-on0.1–7%
Rinse-off0.12–14.4%
0%50%100%
CIR reported use · 2015 survey
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR