Zinc Carbonate
molecular structure · PubChem
AKA: 3486-35-9, Zinc monocarbonate, Zincspar, Carbonic acid, Zinc salt (1:1), Natural smithsonite, Zinc carbonate (1:1), CI 77950, C.I. 77950
Synthetic
Clean
Zinc carbonate appears as a white crystalline solid or powder that is insoluble in water. The primary hazard is the threat posed to the environment. Immediate steps should be taken to limit its spread to the environment. Used in pharmaceuticals, to make other zinc compounds, as a feed additive.
Solubility 0.001 G/100 G OF WATER AT 15 °C; SOL IN DIL ACIDS, ALKALIES & SOLN OF AMMONIUM SALTS.
Formula
CO3Zn
Mol. Weight
125.40
CAS #
3486-35-9
Form
Powder
State
Zinc carbonate appears as a white crystalline solid or powder that is insoluble in water. The primary hazard is the threat posed to the environment. Immediate steps should be taken to limit its spread
Functions
Opacifying
Adds Opacity
Fights Bacteria
Creates creamy opacity
Traditional Use
Zinc compounds have been used in traditional medicine for skin healing; zinc carbonate became standardized in 19th and 20th century pharmaceuticals and cosmetics for its astringent and protective properties.
EWG
2
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
2.0%
0%3%
Reg. Limit
FDA OTC limit (Skin Protectant): 2%. 21 CFR 347.10
Regulatory Agencies
Skin Types
●all-skin-types
Best For
Oiliness
Pregnancy & Breastfeeding Safe
Yes
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.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR