Purity, Chemical

Name:
Purity, Chemical
Detailed information:
A substance is said to be pure when its phsyical and chemical properties coincide with those previously established and recorded in the literature, and when no change in these properties occurs after application of the most selective fractionation techniques. In other words, purity exists when no impurity can be detected by any experimental procedure. There are a number of recognized standards of purity.See Grade.