The word chromatographic 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: 33
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (45 words)
accompt, airport, amphora, apogaic, apricot, archaic, atropia, camphor, captcha, carport, catarrh, chaotic, chariot, choragi, chromic, coactor, cochair, compact, compart, comport, corpora, graphic, haircap, haricot, hightop, morphic, octarch, oghamic, pharaoh, porotic, portico, potamic, practic, proctor, program, prootic, rampart, tapioca, taproom, toparch, tramcar, triarch, trigram, trochar, trophic