SHEET /m/butyric-acid · PubChem CID 264 · CAS 107-92-6 · REV 2026.07
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Butyric acid from source
C4H8O2 · 88.11 g/mol
butanoic acid · n-Butyric acid · n-Butanoic acid · propylformic acid
chemical compound
CategoryFood & flavor
Chemical familyCarboxylic Acids
Fig. 1 · 2D structure RDKit
CCCC(=O)O
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 Butyric acid is 8,790 mg/kg, the dose lethal to half the animals tested. Scaled by body mass alone:
615.3 g
a median lethal dose scaled to 154 lb (615,300 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
8,790 mg/kg · very low toxicity · LD50 rat oral from source
The dose lens above scales this to a body weight.
2 more reported values
- 800 mg/kgLD50 · iv · mouse
- 3,180 mg/kgLD50 · other · mouse
DangerCorrosiveToxicIrritantHealth hazardH227, H302, H311, H314, H318, H371from source
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