All hazardous chemical labels must be ________.

All hazardous chemical labels must be legible. This requirement is essential for ensuring that anyone who handles or comes into contact with hazardous materials can easily read and understand the important safety information provided. Clear visibility of labels helps in proper identification of chemicals and their associated hazards, which is crucial for safe handling and emergency response.

Labels must contain relevant details such as the identity of the chemical, hazard warnings, and instructions for handling, which need to be easily understandable to prevent accidents and ensure compliance with safety regulations. The emphasis on legibility supports effective communication of risks and safety procedures among workers, thereby enhancing overall workplace safety.

While other attributes like being permanent can be important for certain situations, the fundamental aspect of a label is its legibility to ensure that the necessary information is accessible at all times. Labels made of certain materials, such as paper, may not be suitable in all environments, particularly if exposure to chemicals can damage them; therefore, the emphasis on legibility takes precedence over the material of the label or its color.