28 Laboratory Safety Manual Environmental Health and Safety Proper Labeling for Materials All containers used to store chemical, biological, or radiological material in the laboratory must be labeled to ensure hazard information is readily available to employees, visitors, and emergency response personnel. The label must include the following components: • Proper chemical or common name of contents in english. Chemical formulas, symbols, or acronyms alone are not acceptable. Mixtures or solutions must include a list of constituents and their concentrations. • Signal word, available from an safety data sheet (SDS) (danger, caution, or warning). • Associated hazard statement(s), (fatal if swallowed, flammable liquid, vapor, etc.). Include additional information, such as dates received, prepared or opened, storage location, and owner or user of the material. Additional Resources • Biosafety Manual – Section D, “Biosafety Practices and Procedures” • Radioactive Materials Safety Manual – Section L, “Laboratory Safety” Safe Storage of Materials Below are some general guidelines for the safe storage of chemical, biological, and radiological materials: • Store materials according to the manufacturer’s specifications in a designated location. • Ensure that all stored containers are in good condition, closed, and properly labeled. • Store all hazardous materials in containers, cabinets, or on shelving compatible with the associated hazard or material. • Segregate chemicals by hazard class (flammable liquids, organic acids, oxidizers). Chemicals that belong in the same hazard class may be stored alphabetically. • Use secondary containment for all liquid hazardous materials to prevent release into the environment. Hazardous liquids should be stored less than 60 inches from the floor. • Secure all storage shelves and cabinets to the wall, to prevent tipping. • Ensure that storage locations are dry, adequately vented, and away from heat sources. • Provide inventories of hazardous materials stored in the laboratory annually to EH&S. Update the inventory upon significant changes in amounts or processes.