The LCSSs provide concise critical discussions of the toxicity, flammability, reactivity, and explosibility of 88 chemicals commonly used in scientific research laboratories. Directions for handling, storage, and disposal and special instructions for first aid and emergency response are given. Since many of these 88 chemicals are representative of a class of potentially hazardous compounds, the LCSSs can also be used as guides to handling many other compounds with related chemical structures. Unlike most Material Safety Data Sheets (MSDSs), the LCSSs are designed especially for laboratory workers.