Ref Q121 .M3 2007 vol. 1-20
McGraw-Hill Encyclopedia of Science And Technology. New York: McGraw-Hill, 2007.
Entries with bibliographies on all aspects of science, technology and biology.
Ref RS 51 .M4 2006
Merck Index. Whitehouse Station, N.J.: Merck and Co., 2006.
An invaluable resource if you need to know the lethal dosage of a compound, structure, formula etc.
Ref QD65 .H3 2009/10
CRC Handbook of Chemistry and Physics. New York: CRC Press, 2009-10.
Often referred to as the "bible" of chemists, this handbook has it all. Packed with all sorts of tables, values, etc. it is a gold mine of data. Remember, some information is not carried over into the next editions; hence, if you do not find what you need, try another edition.
Ref QD 246.D5 1996 vol.1-9
Dictionary of Organic Compounds. New York: Chapman and Hall, 1996.
A very important source for the organic chemist. This set has many access points including, registry number, name and formula. Provides structure information, boiling points, and bibliographic references to the original synthesis papers regarding that compound.