In a professional kitchen, chemicals such as cleaners, degreasers, and sanitizers are often purchased in bulk (large carboys or drums) and then transferred to smaller, more manageable spray bottles or buckets for daily use. These smaller vessels are known as "secondary containers." According to ServSafe and OSHA (Occupational Safety and Health Administration) standards, these containersmust be labeled with the chemical's common name.

This labeling is critical for two reasons. First, it prevents the accidental misuse of a chemical (for example, mistaking a powerful degreaser for a mild glass cleaner). Second, and most importantly, it prevents the catastrophic error of a chemical being mistaken for a food ingredient. A spray bottle containing a clear sanitizer could easily be confused with water or white vinegar if it is not clearly labeled. While usage instructions (Option C) are helpful, the "common name" is the mandatory requirement. The Safety Data Sheet (Option D) must be kept on file in the facility for every chemical used, but the sheet itself does not need to be attached to the bottle. Expiration dates (Option A) are rarely required on secondary labels unless specified by the manufacturer. Managers must ensure that labels are durable, legible, and written in English (and potentially other languages spoken by the staff). This is a vital part of "Chemical Contamination" prevention and "Cleaning and Sanitizing" management.