The Merck Index
Before using any reagent for the first time, you may want to see its basic properties, especially any safety issues for this substance. The convenient to use one volume book the Merck Index has concise summaries for more than 10,000 common substances.
You can find this book in the library's reference collection, call number RS 51 .M4. If you cannot find your substance by browsing through the book, there are both name and formula indexes at the back of the book.