Chemcentral: Kristine J. Weigal was promoted to vice president, corporate business development. She has served in sales management positions since joining the company in 1986 as a sales representative. She most recently served as director of corporate business/account development. Phil A. Scafido has been appointed senior vice president, director of sales and marketing. He will be based in the firm’s Chicago headquarters. He succeeds Bill Hough, who was recently appointed president of Chemcent...