Phosphates rhymes with:
accentuates, alleviates, candidate's, candidates, candidates', carbohydrates, coarticulates, colgate's, defrates, desiccates, discombobulates, emanates, goates, hallucinates, insinuates, matriculates, overpopulates, palpitates, prevaricates, promulgates, vibrates, violates, vociferates
Phosphates sounds like:
phosphatic, psychopathic, psychopaths, pussyfoots