Dictionaries

Combined Chemical Dictionary
It consists of :
Dictionary of Commonly Cited Compounds (also included in CCD)
Dictionary of Drugs (Formerly Pharmasource; also included in CCD)
Dictionary of Inorganic and Organometallic Compounds (also included in CCD)
Dictionary of Natural Products (also included in CCD)
Dictionary of Organic Compounds (also included in CCD)

Merck Index
Contains monographs describing significant chemicals, drugs, and biological substances.

Property of Organic Compounds
This is a database containing over 29,000 of the most commonly sought organic compounds, featuring physical data, spectral data, and structures.

Encyclopedias

Encyclopedia of Inorganic Chemistry
It encompasses the whole of inorganic chemistry, including Bioinorganic Chemistry, Physical and Theoretical Methods, Organometallic Chemistry, Solid State Chemistry, Main Group Elements, Transition Metals.

Kirk-Othmer Encyclopedia of Chemical Technology
Describes the theory and practice of chemical engineering, the industrial production and uses of chemical materials, and basic subjects of chemistry.

Ullman's Encyclopedia of Industrial Chemistry
Subject coverage includes chemical engineering, industrial safety, and analytical methods.

Handbooks 

CHEMnetbase
Consists of chemical information from Combined Chemical Dictionary (CCD); the Handbook of Chemistry & Physics; Polymers: A Property Database; Properties of Organic Compounds. 

Handbook of Chemistry and Physics Provides data on properties of inorganic and organic compounds including: Physical Properties of Inorganic Compounds; Enthalpy of Fusion; Bond Dissociation Energies; Table of the Isotopes; Inorganic Ion and Ligand Nomenclature; Chemical Carcinogens; and Global Temperature Trends. 

Materials Safety Data Sheets (MSDS)

MSDS-CCOHS
Comprises approximately 120,000 MSDS from 600 North American manufacturers and suppliers. Records contain information such as: chemical and physical properties, health hazards, first aid recommendations, personal protection, fire and reactivity data, spill and disposal procedures, storage and handling.

Spectra

Electronic Handbook of Infrared and Raman Spectra of Inorganic Compounds and Organic Salts.
It provides an essential information resource for industrial chemists and researchers who require both a spectral database and specific routines for spectrum analysis. It is able to undertake spectra analog searches to identify unknown entities and provide extensive reference information on spectral methods and conditions.

Powder Diffraction File CDROM (PDF-4+ 2008)
A collection of single-phase X-ray powder diffraction patterns in the form of tables of interplanar spacing (d) and relative intensities (Int) and chemical name and formula as well as mineral names. In addition, Miller indices, cell data and physical properties are listed, together with references for source information, where such data are available.

PDF-4+(2008) search guide. Search using :
Periodic Table; Elements; Names; References; Structures; Miscellaneous; SIeve+ (Intensity & d-spacing)

Proton and Carbon NMR Spectra of Polymers (5th Edition)
Provides information on polymer microstructure or fine structure, which results from normal and abnormal addition modes, arising from secondary reactions, as well as tacticity or stereochemical arrangement of monomer units in the main chain of the skeleton.

Click here for a list of Spectra CDROMs available at Science Library. Paper version of Spectra at Science Library are at the Reference Collection 4.