A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c10.t17.22

v1.c10.t17.22

On this subject there are the following verses: “Good alkaline caustics should be neither too strong nor too weak. They should be white in colour, smooth and soapy to the touch, should not spread beyond where they are applied, and act rapidly and successfully. These are the eight good properties of caustics. Their bad qualities consist in their being too weak or cool, too strong or hot, too slippery and spreading, too thick or too under-boiled, or they may be deficient in ingredients.