SHEET /m/ammonia · PubChem CID 222 · CAS 7664-41-7 · REV 2026.07
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Ammonia from source
H3N · 17.031 g/mol
azane · Ammonia gas · Nitro-sil · Ammonia anhydrous
chemical compound
CategoryEveryday chemistry
Fig. 1 · 2D structure RDKit
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 Ammonia is 350 mg/kg, the dose lethal to half the animals tested. Scaled by body mass alone:
24.5 g
a median lethal dose scaled to 154 lb (24,500 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
350 mg/kg · low toxicity · LD50 rat oral from source
The dose lens above scales this to a body weight.
DangerFlammableCompressed gasCorrosiveToxicIrritantHealth hazardEnvironmentalH220, H221, H280, H302, H314, H318, H331, H332, H334, H335, H341, H370, H372, H373, H400, H402, H410, H411from source