SHEET /m/urea · PubChem CID 1176 · CAS 57-13-6 · REV 2026.07
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Urea from source
CH4N2O · 60.056 g/mol
carbamide · Carbonyldiamide · Ureophil · Carbonyldiamine
the diamide of carbonic acid
CategoryBody
Fig. 1 · 2D structure RDKit
C(=O)(N)N
Where you'll find it
Not yet mapped to everyday foods or products.
The dose makes the poison inferred
A reported rat oral LD50 for Urea is 8,471 mg/kg, the dose lethal to half the animals tested. Scaled by body mass alone:
593.0 g
a median lethal dose scaled to 154 lb (592,970 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
8,471 mg/kg · very low toxicity · LD50 rat oral from source
The dose lens above scales this to a body weight.
1 more reported value
- 8,200 mg/kgLD50 · other · rat
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Where Urea leads
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