SHEET /m/potassium-chloride · PubChem CID 4873 · CAS 7447-40-7 · REV 2026.07
Potassium chloride
from sourceClK · 74.55 g/mol
muriate of potash · chloride of potash · Acronitol · Chlorvescent
What is Potassium chloride?
The main ingredient in salt substitutes like NoSalt, used to cut sodium. It tastes salty with a metallic, slightly bitter edge. from source
Fig. 1 · 2D structure RDKit
[Cl-].[K+]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:
“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