If you ship, sell, or handle hazardous materials, this standard should be a part of your library. OSHA, WHMIS and other authorities require the preparation and distribution of MSDSs (material safety data sheets) which describe the hazards of a material and provide information on how the material can be safely handled, used and stored. This document has been developed to provide guidance for preparing material safety data sheets for compressed gases. It also provides actual MSDSs (revised in 2000) for several commonly used gases.