SHEET /m/gallic-acid · PubChem CID 370 · CAS 149-91-7 · REV 2026.07
Gallic acid from source
C7H6O5 · 170.12 g/mol
3,4,5-Trihydroxybenzoic acid · Benzoic acid, 3,4,5-trihydroxy- · Gallic acid, tech. · Pyrogallol-5-carboxylic acid
3,4,5-trihydroxybenzoic acid
Fig. 1 · 2D structure RDKit
C1=C(C=C(C(=C1O)O)O)C(=O)O
Where you'll find it
Not yet mapped to everyday foods or products.
The dose makes the poison inferred
A reported rabbit oral LD50 for Gallic acid is 5,000 mg/kg, the dose lethal to half the animals tested. Scaled by body mass alone:
“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
5,000 mg/kg · very low toxicity · LD50 rabbit oral from source
The dose lens above scales this to a body weight.
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