WHMIS WHMIS stands for: Workplace Hazardous Materials Information System You can identify a WHMIS label by its broken line border. The WHMIS symbols are: Hazardous materials used in the workplace or in schools must have a WHMIS label. That label will include one or more of the symbols above. The information is provided for everyone’s safety. When you handle these materials it is your legal responsibility to do so safely. You must know the meaning of these symbols, and you must know proper procedures for handling them. It’s the law. MSDS stands for: Material Safety Data Sheet You can get an MSDS simply by asking for it. Employers and lab instructors must have them. A dangerous container border is in the shape of a triangle, but a dangerous product border is in the shape of an octagon. The main safety items commonly used in chemistry labs are: lab coats, safety goggles, and gloves.