SHEET /m/potassium-chloride · PubChem CID 4873 · CAS 7447-40-7 · REV 2026.07
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Potassium chloride from source
ClK · 74.55 g/mol
Klotrix · Sylvite · Enseal · Slow-K
chemical compound
CategoryFood & flavor
Fig. 1 · 2D structure RDKit
[Cl-].[K+]
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 Potassium chloride is 383 mg/kg, the dose lethal to half the animals tested. Scaled by body mass alone:
26.8 g
a median lethal dose scaled to 154 lb (26,810 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
383 mg/kg · low toxicity · LD50 mouse oral from source
The dose lens above scales this to a body weight.
3 more reported values
- 2,500 mg/kgLD50 · oral · guinea pig
- 39 mg/kgLD50 · iv · rat
- 117 mg/kgLD50 · iv · mouse