Chemical encyclopedias summarize and filter the chemistry literature to provide you with pertinent information. They provide detailed information on most chemical topics. Chemical encyclopedias are excellent places to start.
Encyclopedia 4U - Chemistry
A very detailed encyclopedia covering all aspects of chemistry that would be used in freshman level chemistry classes.
Encyclopedia of Chemistry
Growing encyclopedia with articles on chemical reactions, experimental chemistry, quantum chemistry, inorganic and organic chemistry.
Kirk-Othmer Encyclopedia of Chemical Technology
Highly regarded source of information in applied chemistry and chemical technology. About half the articles focus on industrially important chemical substances or materials, their properties, manufacture, and industrial and economic significance. Other articles cover chemical processes and engineering principles, current research, and emerging technologies; environmental, safety, and health topics; and selected chemistry fundamentals.
Little Encyclopedia of Mass Spectrometry
The Little Encyclopedia of Mass Spectrometry was developed by the Mass Spectrometry Group of the University of Heidelberg, and is intended to serve as a fast source of basic knowledge of mass spectrometry. Explanations are given in a tutorial-like form aided by diagrams and links to the selected topic areas are provided for further explanation.