The Specialty Chemicals Market Volume Index fell 0.3% in September reflecting the lingering effects of Hurricane Harvey on market volumes. The decline follows a virtually flat performance in August. All data are reported on a three-month moving average basis. Of the twenty-eight specialty chemical segments monitored, eighteen expanded in September while seven markets declined and three remained stable. Markets showing largest gains included cosmetic chemicals, electronic chemicals, and flavors and fragrances. Muting the overall index, large declines were observed in the catalysts, lubricants, and plastic compounding markets.