MADRAS, Ore. -- A high school chemistry experiment that went awry this week sent four student and one teacher to the hospital. At the end of class on Friday, a reaction experiment in a freshman chemistry class caused an explosion at Madras High School.

Chemical company Albemarle Corp. on Monday said it acquired the assets, fine chemistry services and pharmachemicals business associated with the South Haven, Mich., facility of DSM Pharmaceutical Products.

Fullerenes, sometimes called "buckyballs," are usually spherical molecules of carbon, named after the futurist R. Buckminster Fuller, inventor of the...