Ullmann’s Encyclopedia of Industrial Chemistry 7th Edition, 2009
ENGnetBASE – Includes over 1000 books from CRC Press.
Knovel – Chemistry and Chemical Engineering subset. Includes over 240 books.
Referex – Chemical, Petrochemical and Process – Includes over 300 books including Lee’s Loss Prevention in the Process Industries
Coulson and Richardson’s Chemical Engineering Vol. 2