| Amino acids are amphoteric organic acids that are able to biochemically react with both acids or bases. |
| The presence of both of these ions makes water an amphoteric substance. |
| Morphine is an amphoteric pentacyclic alkaloid that exists naturally in its levorotatory form as columnar colorless prisms. |
| Finally, amphoteric detergents have either a positively or negatively charged ion, depending on the pH of the system they are incorporated into. |
| Vanadium dioxide is a dark blue solid inorganic compound that is considered to be amphoteric. |
| However, the greatest growth will be registered by amphoteric surfactants such as betaines, propionates and amphoglycinates. |
