SHEET /m/calcium-carbonate · PubChem CID 10112 · CAS 471-34-1 · REV 2026.07
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Calcium carbonate from source
CCaO3 · 100.09 g/mol
Aeromatt · Calofort U · Albaglos · Aragonite
chemical compound
CategoryNutrient
Fig. 1 · 2D structure RDKit
C(=O)([O-])[O-].[Ca+2]
Where you'll find it
Not yet mapped to everyday foods or products.
The dose makes the poison inferred
A reported mouse oral LD50 for Calcium carbonate is 310 mg/kg, the dose lethal to half the animals tested. Scaled by body mass alone:
21.7 g
a median lethal dose scaled to 154 lb (21,700 mg)
“The dose makes the poison” is a cross-species estimate shown as neutral science, not a threshold anyone should act on. Real toxicity depends on the person, not body mass alone.
Toxicity & hazards
Toxicity · LD50
310 mg/kg · low toxicity · LD50 mouse oral from source
The dose lens above scales this to a body weight.
2 more reported values
- 6,450 mg/kgLD50 · oral · mouse
- 6,450 mg/kgLD50 · oral · rat
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