Popularly known as Rochelle Salt.

Properties : Potassium and sodium tartrate occurs as colorless, transparent crystals or white powder, odorless and having a cooling saline taste. It is freely soluble in water (1:1.2), but practically insoluble in alcohol.

Action and Uses: Potassium and sodium tartrate is used as a saline cathartic.

Dosage: 8 gm. or 120 grains.