A Material Safety Data Sheet, or MSDS, is a document that highlights fire, health and environmental hazards and explains how to work safely with chemicals, states the Canadian Centre for Occupational Health and Safety. It also contains information on the use, handling, storage and emergency procedures for potentially hazardous material.
Canadian law dictates that every potentially hazardous product or material must have an MSDS. The document contains product information, physical data, preventive measures and first aid measures, notes CCOHS. It also has traditionally featured technical information and data meant for hygienists and safety professionals. People handling or using chemical products must read the MSDSs to understand the product.