The word chlorinate 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: 17
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (53 words)
aconite, aileron, airhole, alethic, aloetic, another, archlet, article, calorie, central, certain, chainer, chanter, chariot, chlorin, cholate, cholera, choline, chorale, chortle, cithern, clarion, coalier, coalite, corneal, elation, enactor, enthral, erotica, ethanol, ethical, hairnet, haricot, hernial, hotline, inhaler, inreach, lactone, latrine, lection, loather, notcher, otarine, rathole, ratline, rechain, recital, reliant, retinal, retinol, toenail, tranche, trenail