The word perchloride is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 21
Highest Scoring Words With Friends™ Play In The Letters perchloride
:
Seven Letter Word Alert: (27 words)
cheerio, chirped, chirper, cohered, coherer, decrier, deplore, pedicel, pedicle, perched, percher, periled, pierced, piercer, policed, porched, precode, proceed, redpole, rehired, reoiled, reperch, repiled, replied, replier, reprice, ripcord