CHEMCENTRAL's board of directors has elected Samuel W. Ach to the position of senior vice president, general counsel and secretary. In this capacity, he oversees all of the company's legal activities and is a key member of its executive management team. Ach fills the position left by William D. Mulliken, who retired.
CHEMCENTRAL has also appointed Kristine J. Weigal to the position of vice president, corporate business development. Weigal has served in sales-management positions of increasing responsibility within CHEMCENTRAL since joining the Chicago-based company in 1986.