What is another word for Phthalic Acid?
Pronunciation: [fθˈalɪk ˈasɪd] (IPA) 
Phthalic acid is a white crystalline powder used in the production of plasticizers, dyes, and resins. Synonyms for phthalic acid include benzene-1,2-dicarboxylic acid, orthophthalic acid, and 1,2-benzenedicarboxylic acid. Other related compounds that are sometimes referred to as phthalic acids include isophthalic acid, terephthalic acid, and phthalic anhydride. Isophthalic acid is an isomer of phthalic acid, while terephthalic acid is a derivative of benzene. Phthalic anhydride is the acid anhydride of phthalic acid, and is commonly used in the production of polyester resins and phthalate plasticizers.
