SHEET /m/salicylic-acid · PubChem CID 338 · CAS 69-72-7 · REV 2026.07
Salicylic acid from source
C7H6O3 · 138.12 g/mol
2-Hydroxybenzoic acid · o-hydroxybenzoic acid · 2-Carboxyphenol · o-Carboxyphenol
Also sold as Stridex, Clearasil, Compound W from source
chemical compound
Fig. 1 · 2D structure RDKit
C1=CC=C(C(=C1)C(=O)O)O
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 Salicylic acid is 480 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
480 mg/kg · low toxicity · LD50 mouse oral from source
The dose lens above scales this to a body weight.
3 more reported values
- 891 mg/kgLD50 · oral · rat
- 520 mg/kgLD50 · other · mouse
- 2,000 mg/kgLD50 · dermal · rat
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