👉 Phthalanilic is a type of polycarboxylic ester polymer. It is composed of two or more carboxyl groups attached to a monolayer of phthalic acid. The name "phthalanilic" comes from the presence of a phthalic acid group, which is analogous to a phosphorus atom in organic chemistry. Phthalic acid is a type of acrylamide, and its functional group structure allows it to form a variety