Here's what rhymes with phosphoric.

Consider these alternatives

acetic / magnetic hydrochloric / historic acetaldehyde / side hydroxide / dioxide aldehyde / side aniline / seen polysaccharides / rights peroxide / dioxide benzoic / heroic salicylic / acetylsalicylic glycerol / whole abscisic / specific sulfate / sulphate perchloric / historic formate / late ascorbic / aortic