When do chemicals NOT require labeling?

Chemicals do not require labeling when they are transferred to small portable containers for immediate use. This exception is based on the understanding that these containers are typically used in a limited scope for specific tasks, which minimizes the risk of exposure or accidental misuse. As long as the chemicals are being used immediately and are not intended for prolonged storage, detailed labeling becomes unnecessary to prevent confusion or miscommunication about their use.

This situation is often found in situations like laboratories or manufacturing environments where a worker might need to quickly prepare a solution for a specific task. The focus is on the immediate context in which the chemicals will be applied, ensuring safety and efficiency while reducing clutter from unnecessary labels on containers that are only used temporarily.

When chemicals are stored in their original containers, they generally must have proper labeling that conveys important safety and handling information. Similarly, being in a well-ventilated area does not exempt a chemical from requiring a label, as ventilation primarily pertains to exposure control rather than proper identification. Additionally, combining chemicals with non-hazardous substances does not negate the need for labeling of the hazardous component, as the potential risks may still need to be communicated to prevent accidents.